./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- 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 09:28:48,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:48,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:48,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:48,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:48,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:48,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:48,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:48,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:48,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:48,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:48,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:48,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:48,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:48,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:48,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:48,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:48,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:48,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:48,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:48,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:48,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:48,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:48,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:48,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:48,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:48,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:48,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:48,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:48,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:48,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:48,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:48,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:48,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:48,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:48,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:48,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:48,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:48,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:48,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:48,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:48,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-11-20 09:28:48,326 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:48,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:48,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:48,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:48,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:48,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:48,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:48,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:48,329 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:48,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:48,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:48,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:28:48,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:48,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:48,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:48,333 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:28:48,333 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:28:48,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:48,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:28:48,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:48,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:48,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:48,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:48,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:48,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:48,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:48,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:48,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:48,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:48,338 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_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2022-11-20 09:28:48,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:48,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:48,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:48,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:48,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:48,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2022-11-20 09:28:51,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:52,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:52,012 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2022-11-20 09:28:52,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/8710ad58f/438560aad9124e34b741453972a579a8/FLAG8f83746e0 [2022-11-20 09:28:52,058 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/8710ad58f/438560aad9124e34b741453972a579a8 [2022-11-20 09:28:52,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:52,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:52,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:52,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:52,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:52,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc58183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52, skipping insertion in model container [2022-11-20 09:28:52,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:52,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:52,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:52,476 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:52,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:52,550 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:52,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52 WrapperNode [2022-11-20 09:28:52,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:52,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:52,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:52,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:52,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,598 INFO L138 Inliner]: procedures = 168, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2022-11-20 09:28:52,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:52,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:52,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:52,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:52,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:52,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:52,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:52,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:52,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (1/1) ... [2022-11-20 09:28:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:52,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:52,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2022-11-20 09:28:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2022-11-20 09:28:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:28:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:28:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:28:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:28:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:52,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:52,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:53,226 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:53,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:53,233 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:28:53,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:53 BoogieIcfgContainer [2022-11-20 09:28:53,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:53,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:53,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:53,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:53,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:52" (1/3) ... [2022-11-20 09:28:53,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413f1d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:53, skipping insertion in model container [2022-11-20 09:28:53,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:52" (2/3) ... [2022-11-20 09:28:53,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413f1d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:53, skipping insertion in model container [2022-11-20 09:28:53,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:53" (3/3) ... [2022-11-20 09:28:53,245 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2022-11-20 09:28:53,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:53,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-11-20 09:28:53,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:53,368 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;@339ffe1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:53,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 09:28:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 39 states have (on average 1.794871794871795) internal successors, (70), 62 states have internal predecessors, (70), 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 09:28:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:53,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:53,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:53,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash -594954629, now seen corresponding path program 1 times [2022-11-20 09:28:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064067996] [2022-11-20 09:28:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:53,754 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 09:28:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:53,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064067996] [2022-11-20 09:28:53,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064067996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:53,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:53,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914086023] [2022-11-20 09:28:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:53,795 INFO L87 Difference]: Start difference. First operand has 67 states, 39 states have (on average 1.794871794871795) internal successors, (70), 62 states have internal predecessors, (70), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 09:28:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:53,947 INFO L93 Difference]: Finished difference Result 134 states and 155 transitions. [2022-11-20 09:28:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 09:28:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:53,960 INFO L225 Difference]: With dead ends: 134 [2022-11-20 09:28:53,960 INFO L226 Difference]: Without dead ends: 128 [2022-11-20 09:28:53,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:53,965 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 114 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:53,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 130 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-20 09:28:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 95. [2022-11-20 09:28:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.646153846153846) internal successors, (107), 85 states have internal predecessors, (107), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 09:28:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2022-11-20 09:28:54,017 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 6 [2022-11-20 09:28:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:54,018 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2022-11-20 09:28:54,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 09:28:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2022-11-20 09:28:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:54,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:54,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:54,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:54,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash -594954628, now seen corresponding path program 1 times [2022-11-20 09:28:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:54,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061971510] [2022-11-20 09:28:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:54,340 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 09:28:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:54,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061971510] [2022-11-20 09:28:54,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061971510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:54,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:54,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108959444] [2022-11-20 09:28:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:54,345 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 5 states, 4 states have (on average 1.25) 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 09:28:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:54,537 INFO L93 Difference]: Finished difference Result 222 states and 302 transitions. [2022-11-20 09:28:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) 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 09:28:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:54,541 INFO L225 Difference]: With dead ends: 222 [2022-11-20 09:28:54,541 INFO L226 Difference]: Without dead ends: 222 [2022-11-20 09:28:54,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:54,543 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 139 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:54,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 212 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-20 09:28:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 169. [2022-11-20 09:28:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 131 states have (on average 1.6641221374045803) internal successors, (218), 151 states have internal predecessors, (218), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-20 09:28:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 263 transitions. [2022-11-20 09:28:54,569 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 263 transitions. Word has length 6 [2022-11-20 09:28:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:54,572 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 263 transitions. [2022-11-20 09:28:54,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) 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 09:28:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 263 transitions. [2022-11-20 09:28:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 09:28:54,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:54,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:54,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:54,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1263724334, now seen corresponding path program 1 times [2022-11-20 09:28:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289985524] [2022-11-20 09:28:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:54,991 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 09:28:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:54,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289985524] [2022-11-20 09:28:54,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289985524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:54,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:54,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199794832] [2022-11-20 09:28:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:54,997 INFO L87 Difference]: Start difference. First operand 169 states and 263 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:28:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:55,245 INFO L93 Difference]: Finished difference Result 260 states and 371 transitions. [2022-11-20 09:28:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:55,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:28:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:55,257 INFO L225 Difference]: With dead ends: 260 [2022-11-20 09:28:55,257 INFO L226 Difference]: Without dead ends: 260 [2022-11-20 09:28:55,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:55,265 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 109 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:55,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 189 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-20 09:28:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2022-11-20 09:28:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 154 states have internal predecessors, (221), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-20 09:28:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 266 transitions. [2022-11-20 09:28:55,309 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 266 transitions. Word has length 7 [2022-11-20 09:28:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:55,309 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 266 transitions. [2022-11-20 09:28:55,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:28:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 266 transitions. [2022-11-20 09:28:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:28:55,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:55,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:55,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:55,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -520748645, now seen corresponding path program 1 times [2022-11-20 09:28:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:55,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755438799] [2022-11-20 09:28:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:55,619 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 09:28:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:55,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755438799] [2022-11-20 09:28:55,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755438799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:55,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:55,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540763316] [2022-11-20 09:28:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:55,622 INFO L87 Difference]: Start difference. First operand 172 states and 266 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 09:28:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:55,774 INFO L93 Difference]: Finished difference Result 224 states and 303 transitions. [2022-11-20 09:28:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2022-11-20 09:28:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:55,777 INFO L225 Difference]: With dead ends: 224 [2022-11-20 09:28:55,778 INFO L226 Difference]: Without dead ends: 224 [2022-11-20 09:28:55,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:55,789 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 140 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:55,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 208 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-20 09:28:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 172. [2022-11-20 09:28:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 134 states have (on average 1.6343283582089552) internal successors, (219), 154 states have internal predecessors, (219), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-20 09:28:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 264 transitions. [2022-11-20 09:28:55,817 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 264 transitions. Word has length 8 [2022-11-20 09:28:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:55,817 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 264 transitions. [2022-11-20 09:28:55,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 09:28:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 264 transitions. [2022-11-20 09:28:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:28:55,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:55,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:55,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:55,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1036661236, now seen corresponding path program 1 times [2022-11-20 09:28:55,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907149635] [2022-11-20 09:28:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:55,934 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 09:28:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:55,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907149635] [2022-11-20 09:28:55,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907149635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:55,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:55,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:55,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974814725] [2022-11-20 09:28:55,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:55,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:55,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:55,937 INFO L87 Difference]: Start difference. First operand 172 states and 264 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:28:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:56,063 INFO L93 Difference]: Finished difference Result 266 states and 366 transitions. [2022-11-20 09:28:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2022-11-20 09:28:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:56,065 INFO L225 Difference]: With dead ends: 266 [2022-11-20 09:28:56,066 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 09:28:56,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 09:28:56,067 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 147 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:56,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 207 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 09:28:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 205. [2022-11-20 09:28:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 165 states have (on average 1.606060606060606) internal successors, (265), 186 states have internal predecessors, (265), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-20 09:28:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 310 transitions. [2022-11-20 09:28:56,082 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 310 transitions. Word has length 9 [2022-11-20 09:28:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:56,082 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 310 transitions. [2022-11-20 09:28:56,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:28:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 310 transitions. [2022-11-20 09:28:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 09:28:56,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:56,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:56,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:56,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2071727293, now seen corresponding path program 1 times [2022-11-20 09:28:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:56,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825552480] [2022-11-20 09:28:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,180 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 09:28:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825552480] [2022-11-20 09:28:56,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825552480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:56,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:56,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967120744] [2022-11-20 09:28:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:56,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:56,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:56,182 INFO L87 Difference]: Start difference. First operand 205 states and 310 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:28:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:56,299 INFO L93 Difference]: Finished difference Result 253 states and 333 transitions. [2022-11-20 09:28:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2022-11-20 09:28:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:56,301 INFO L225 Difference]: With dead ends: 253 [2022-11-20 09:28:56,302 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 09:28:56,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:56,303 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 139 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:56,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 235 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 09:28:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2022-11-20 09:28:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 178 states have (on average 1.6067415730337078) internal successors, (286), 200 states have internal predecessors, (286), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-20 09:28:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 331 transitions. [2022-11-20 09:28:56,314 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 331 transitions. Word has length 10 [2022-11-20 09:28:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:56,315 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 331 transitions. [2022-11-20 09:28:56,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:28:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 331 transitions. [2022-11-20 09:28:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:28:56,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:56,316 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:56,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:56,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:56,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 288674115, now seen corresponding path program 1 times [2022-11-20 09:28:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:56,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834488814] [2022-11-20 09:28:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:56,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:56,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834488814] [2022-11-20 09:28:56,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834488814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001239064] [2022-11-20 09:28:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:56,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:56,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:56,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:28:56,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:56,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:57,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001239064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:57,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:57,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2022-11-20 09:28:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743272470] [2022-11-20 09:28:57,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:28:57,027 INFO L87 Difference]: Start difference. First operand 219 states and 331 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:57,341 INFO L93 Difference]: Finished difference Result 291 states and 398 transitions. [2022-11-20 09:28:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 09:28:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:57,344 INFO L225 Difference]: With dead ends: 291 [2022-11-20 09:28:57,344 INFO L226 Difference]: Without dead ends: 291 [2022-11-20 09:28:57,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:57,345 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 475 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:57,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 489 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-20 09:28:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 225. [2022-11-20 09:28:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 183 states have (on average 1.540983606557377) internal successors, (282), 206 states have internal predecessors, (282), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 09:28:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 332 transitions. [2022-11-20 09:28:57,356 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 332 transitions. Word has length 14 [2022-11-20 09:28:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:57,357 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 332 transitions. [2022-11-20 09:28:57,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 332 transitions. [2022-11-20 09:28:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 09:28:57,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:57,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:57,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:57,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:28:57,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 358962923, now seen corresponding path program 1 times [2022-11-20 09:28:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:57,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779788648] [2022-11-20 09:28:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779788648] [2022-11-20 09:28:57,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779788648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:57,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224972493] [2022-11-20 09:28:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:57,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:57,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:57,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:57,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:28:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:57,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:28:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:58,075 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 09:28:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:58,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:58,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224972493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:58,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:58,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2022-11-20 09:28:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023200550] [2022-11-20 09:28:58,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:58,180 INFO L87 Difference]: Start difference. First operand 225 states and 332 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:58,641 INFO L93 Difference]: Finished difference Result 336 states and 471 transitions. [2022-11-20 09:28:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 09:28:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:58,647 INFO L225 Difference]: With dead ends: 336 [2022-11-20 09:28:58,647 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 09:28:58,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:58,649 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 248 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:58,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 487 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:28:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 09:28:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 239. [2022-11-20 09:28:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.5257731958762886) internal successors, (296), 220 states have internal predecessors, (296), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) [2022-11-20 09:28:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions. [2022-11-20 09:28:58,670 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 353 transitions. Word has length 15 [2022-11-20 09:28:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:58,671 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 353 transitions. [2022-11-20 09:28:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 353 transitions. [2022-11-20 09:28:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:28:58,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:58,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:58,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:58,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:28:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1757051230, now seen corresponding path program 1 times [2022-11-20 09:28:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:58,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826482988] [2022-11-20 09:28:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826482988] [2022-11-20 09:28:59,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826482988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488236855] [2022-11-20 09:28:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:59,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:59,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:59,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:28:59,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:59,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:28:59,469 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 15 treesize of output 7 [2022-11-20 09:28:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:59,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:59,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488236855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:59,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:59,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2022-11-20 09:28:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773264240] [2022-11-20 09:28:59,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:59,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:28:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:28:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:28:59,681 INFO L87 Difference]: Start difference. First operand 239 states and 353 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,604 INFO L93 Difference]: Finished difference Result 550 states and 739 transitions. [2022-11-20 09:29:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:29:00,606 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:29:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,608 INFO L225 Difference]: With dead ends: 550 [2022-11-20 09:29:00,608 INFO L226 Difference]: Without dead ends: 550 [2022-11-20 09:29:00,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:29:00,609 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 642 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 889 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:29:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-20 09:29:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 345. [2022-11-20 09:29:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 289 states have (on average 1.5536332179930796) internal successors, (449), 320 states have internal predecessors, (449), 14 states have call successors, (14), 10 states have call predecessors, (14), 21 states have return successors, (60), 14 states have call predecessors, (60), 14 states have call successors, (60) [2022-11-20 09:29:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2022-11-20 09:29:00,635 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 16 [2022-11-20 09:29:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:00,635 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2022-11-20 09:29:00,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2022-11-20 09:29:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:29:00,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:00,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:00,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:29:00,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:00,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1592986564, now seen corresponding path program 1 times [2022-11-20 09:29:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:00,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186945165] [2022-11-20 09:29:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,886 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 09:29:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:00,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186945165] [2022-11-20 09:29:00,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186945165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:00,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:00,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:29:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140883658] [2022-11-20 09:29:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:00,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:00,888 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 09:29:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,915 INFO L93 Difference]: Finished difference Result 495 states and 752 transitions. [2022-11-20 09:29:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 18 [2022-11-20 09:29:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,919 INFO L225 Difference]: With dead ends: 495 [2022-11-20 09:29:00,920 INFO L226 Difference]: Without dead ends: 495 [2022-11-20 09:29:00,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 09:29:00,924 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 52 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 117 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-20 09:29:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 479. [2022-11-20 09:29:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 409 states have (on average 1.5574572127139363) internal successors, (637), 445 states have internal predecessors, (637), 19 states have call successors, (19), 14 states have call predecessors, (19), 30 states have return successors, (91), 19 states have call predecessors, (91), 19 states have call successors, (91) [2022-11-20 09:29:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 747 transitions. [2022-11-20 09:29:00,947 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 747 transitions. Word has length 18 [2022-11-20 09:29:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:00,949 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 747 transitions. [2022-11-20 09:29:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 09:29:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 747 transitions. [2022-11-20 09:29:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:29:00,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:00,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:29:00,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1592986820, now seen corresponding path program 1 times [2022-11-20 09:29:00,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:00,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058226053] [2022-11-20 09:29:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,988 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 09:29:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:00,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058226053] [2022-11-20 09:29:00,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058226053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:00,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:00,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343136862] [2022-11-20 09:29:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:00,992 INFO L87 Difference]: Start difference. First operand 479 states and 747 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 09:29:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,998 INFO L93 Difference]: Finished difference Result 441 states and 681 transitions. [2022-11-20 09:29:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2022-11-20 09:29:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,003 INFO L225 Difference]: With dead ends: 441 [2022-11-20 09:29:01,003 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 09:29:01,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 09:29:01,004 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 10 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 114 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 09:29:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-20 09:29:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 377 states have (on average 1.5145888594164456) internal successors, (571), 407 states have internal predecessors, (571), 19 states have call successors, (19), 14 states have call predecessors, (19), 30 states have return successors, (91), 19 states have call predecessors, (91), 19 states have call successors, (91) [2022-11-20 09:29:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 681 transitions. [2022-11-20 09:29:01,033 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 681 transitions. Word has length 18 [2022-11-20 09:29:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,033 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 681 transitions. [2022-11-20 09:29:01,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 09:29:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 681 transitions. [2022-11-20 09:29:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 09:29:01,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:01,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:29:01,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2137943300, now seen corresponding path program 1 times [2022-11-20 09:29:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:01,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251188351] [2022-11-20 09:29:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:01,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:01,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251188351] [2022-11-20 09:29:01,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251188351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:01,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:01,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:29:01,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562319552] [2022-11-20 09:29:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:01,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:01,096 INFO L87 Difference]: Start difference. First operand 441 states and 681 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:29:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:01,131 INFO L93 Difference]: Finished difference Result 509 states and 761 transitions. [2022-11-20 09:29:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19 [2022-11-20 09:29:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,136 INFO L225 Difference]: With dead ends: 509 [2022-11-20 09:29:01,136 INFO L226 Difference]: Without dead ends: 509 [2022-11-20 09:29:01,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 09:29:01,137 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 96 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-20 09:29:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 491. [2022-11-20 09:29:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 424 states have (on average 1.5047169811320755) internal successors, (638), 455 states have internal predecessors, (638), 20 states have call successors, (20), 15 states have call predecessors, (20), 32 states have return successors, (94), 20 states have call predecessors, (94), 20 states have call successors, (94) [2022-11-20 09:29:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 752 transitions. [2022-11-20 09:29:01,159 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 752 transitions. Word has length 19 [2022-11-20 09:29:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,160 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 752 transitions. [2022-11-20 09:29:01,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:29:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 752 transitions. [2022-11-20 09:29:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 09:29:01,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:01,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:29:01,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1078444150, now seen corresponding path program 1 times [2022-11-20 09:29:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136661681] [2022-11-20 09:29:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:01,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136661681] [2022-11-20 09:29:01,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136661681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:01,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:01,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434617223] [2022-11-20 09:29:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:01,255 INFO L87 Difference]: Start difference. First operand 491 states and 752 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:01,321 INFO L93 Difference]: Finished difference Result 351 states and 521 transitions. [2022-11-20 09:29:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:29:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-20 09:29:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,323 INFO L225 Difference]: With dead ends: 351 [2022-11-20 09:29:01,323 INFO L226 Difference]: Without dead ends: 351 [2022-11-20 09:29:01,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:01,324 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 66 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:29:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-20 09:29:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2022-11-20 09:29:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 299 states have (on average 1.4782608695652173) internal successors, (442), 324 states have internal predecessors, (442), 15 states have call successors, (15), 11 states have call predecessors, (15), 22 states have return successors, (64), 15 states have call predecessors, (64), 15 states have call successors, (64) [2022-11-20 09:29:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 521 transitions. [2022-11-20 09:29:01,346 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 521 transitions. Word has length 25 [2022-11-20 09:29:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,346 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 521 transitions. [2022-11-20 09:29:01,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 521 transitions. [2022-11-20 09:29:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:29:01,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:01,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:29:01,350 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1446375410, now seen corresponding path program 1 times [2022-11-20 09:29:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:01,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261726369] [2022-11-20 09:29:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261726369] [2022-11-20 09:29:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261726369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521348479] [2022-11-20 09:29:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:01,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:01,706 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:01,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:29:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:29:01,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:02,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:02,132 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 09:29:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:02,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:08,394 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:29:08,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521348479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:08,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:08,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 13 [2022-11-20 09:29:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448562248] [2022-11-20 09:29:08,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:08,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:29:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:29:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:08,398 INFO L87 Difference]: Start difference. First operand 351 states and 521 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:09,342 INFO L93 Difference]: Finished difference Result 531 states and 739 transitions. [2022-11-20 09:29:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:29:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-20 09:29:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:09,345 INFO L225 Difference]: With dead ends: 531 [2022-11-20 09:29:09,345 INFO L226 Difference]: Without dead ends: 531 [2022-11-20 09:29:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:29:09,346 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 554 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:09,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 207 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 357 Invalid, 0 Unknown, 88 Unchecked, 0.4s Time] [2022-11-20 09:29:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-11-20 09:29:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 452. [2022-11-20 09:29:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 391 states have (on average 1.4757033248081841) internal successors, (577), 420 states have internal predecessors, (577), 17 states have call successors, (17), 14 states have call predecessors, (17), 29 states have return successors, (72), 17 states have call predecessors, (72), 17 states have call successors, (72) [2022-11-20 09:29:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 666 transitions. [2022-11-20 09:29:09,366 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 666 transitions. Word has length 27 [2022-11-20 09:29:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:09,366 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 666 transitions. [2022-11-20 09:29:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 666 transitions. [2022-11-20 09:29:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:29:09,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:09,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:09,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:09,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:29:09,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash 308487171, now seen corresponding path program 1 times [2022-11-20 09:29:09,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:09,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691472326] [2022-11-20 09:29:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:09,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691472326] [2022-11-20 09:29:09,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691472326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:09,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588478225] [2022-11-20 09:29:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:09,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:09,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:29:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:09,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:29:09,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:10,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:10,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588478225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:10,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:10,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-11-20 09:29:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287879635] [2022-11-20 09:29:10,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:10,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:10,062 INFO L87 Difference]: Start difference. First operand 452 states and 666 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:10,203 INFO L93 Difference]: Finished difference Result 566 states and 816 transitions. [2022-11-20 09:29:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:10,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 09:29:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:10,207 INFO L225 Difference]: With dead ends: 566 [2022-11-20 09:29:10,207 INFO L226 Difference]: Without dead ends: 566 [2022-11-20 09:29:10,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:29:10,208 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 126 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 164 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:29:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-20 09:29:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 473. [2022-11-20 09:29:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 416 states have (on average 1.4615384615384615) internal successors, (608), 441 states have internal predecessors, (608), 17 states have call successors, (17), 14 states have call predecessors, (17), 25 states have return successors, (68), 17 states have call predecessors, (68), 17 states have call successors, (68) [2022-11-20 09:29:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 693 transitions. [2022-11-20 09:29:10,228 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 693 transitions. Word has length 28 [2022-11-20 09:29:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:10,229 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 693 transitions. [2022-11-20 09:29:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 693 transitions. [2022-11-20 09:29:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:29:10,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:10,230 INFO L195 NwaCegarLoop]: trace histogram [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 09:29:10,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:10,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:29:10,450 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1602633389, now seen corresponding path program 1 times [2022-11-20 09:29:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:10,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097289945] [2022-11-20 09:29:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:11,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097289945] [2022-11-20 09:29:11,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097289945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:11,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178751650] [2022-11-20 09:29:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:11,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:11,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:29:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:29:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:11,638 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 09:29:11,770 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 09:29:11,776 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 09:29:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:11,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:12,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178751650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:12,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:12,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2022-11-20 09:29:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771843031] [2022-11-20 09:29:12,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:29:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:29:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=385, Unknown=1, NotChecked=0, Total=462 [2022-11-20 09:29:12,023 INFO L87 Difference]: Start difference. First operand 473 states and 693 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:14,509 INFO L93 Difference]: Finished difference Result 821 states and 1099 transitions. [2022-11-20 09:29:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 09:29:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-20 09:29:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:14,513 INFO L225 Difference]: With dead ends: 821 [2022-11-20 09:29:14,513 INFO L226 Difference]: Without dead ends: 821 [2022-11-20 09:29:14,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=534, Invalid=2117, Unknown=1, NotChecked=0, Total=2652 [2022-11-20 09:29:14,514 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 808 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:14,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 327 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 653 Invalid, 0 Unknown, 113 Unchecked, 0.8s Time] [2022-11-20 09:29:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-20 09:29:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 637. [2022-11-20 09:29:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 570 states have (on average 1.4578947368421054) internal successors, (831), 597 states have internal predecessors, (831), 21 states have call successors, (21), 18 states have call predecessors, (21), 31 states have return successors, (79), 21 states have call predecessors, (79), 21 states have call successors, (79) [2022-11-20 09:29:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 931 transitions. [2022-11-20 09:29:14,541 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 931 transitions. Word has length 29 [2022-11-20 09:29:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:14,541 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 931 transitions. [2022-11-20 09:29:14,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 931 transitions. [2022-11-20 09:29:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:29:14,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:14,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:14,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:14,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:29:14,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1182683565, now seen corresponding path program 1 times [2022-11-20 09:29:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:14,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217382440] [2022-11-20 09:29:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:14,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217382440] [2022-11-20 09:29:14,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217382440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:14,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:14,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187181085] [2022-11-20 09:29:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:14,899 INFO L87 Difference]: Start difference. First operand 637 states and 931 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:15,134 INFO L93 Difference]: Finished difference Result 546 states and 750 transitions. [2022-11-20 09:29:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:29:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-20 09:29:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:15,138 INFO L225 Difference]: With dead ends: 546 [2022-11-20 09:29:15,139 INFO L226 Difference]: Without dead ends: 546 [2022-11-20 09:29:15,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:29:15,140 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 120 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:15,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 128 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:29:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-20 09:29:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 521. [2022-11-20 09:29:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 466 states have (on average 1.4334763948497855) internal successors, (668), 493 states have internal predecessors, (668), 15 states have call successors, (15), 12 states have call predecessors, (15), 25 states have return successors, (47), 15 states have call predecessors, (47), 15 states have call successors, (47) [2022-11-20 09:29:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 730 transitions. [2022-11-20 09:29:15,157 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 730 transitions. Word has length 30 [2022-11-20 09:29:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:15,158 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 730 transitions. [2022-11-20 09:29:15,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 730 transitions. [2022-11-20 09:29:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:29:15,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:15,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:29:15,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1857972446, now seen corresponding path program 1 times [2022-11-20 09:29:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957812839] [2022-11-20 09:29:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957812839] [2022-11-20 09:29:15,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957812839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:15,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560104308] [2022-11-20 09:29:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:15,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:15,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:29:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:29:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:15,732 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:15,732 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 09:29:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:15,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560104308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:15,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:15,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2022-11-20 09:29:15,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010734391] [2022-11-20 09:29:15,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:29:15,893 INFO L87 Difference]: Start difference. First operand 521 states and 730 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:16,390 INFO L93 Difference]: Finished difference Result 636 states and 836 transitions. [2022-11-20 09:29:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:16,391 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-11-20 09:29:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:16,394 INFO L225 Difference]: With dead ends: 636 [2022-11-20 09:29:16,394 INFO L226 Difference]: Without dead ends: 636 [2022-11-20 09:29:16,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:16,395 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 227 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:16,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 188 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 316 Invalid, 0 Unknown, 100 Unchecked, 0.3s Time] [2022-11-20 09:29:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-20 09:29:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 572. [2022-11-20 09:29:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 515 states have (on average 1.4077669902912622) internal successors, (725), 542 states have internal predecessors, (725), 15 states have call successors, (15), 14 states have call predecessors, (15), 27 states have return successors, (47), 15 states have call predecessors, (47), 15 states have call successors, (47) [2022-11-20 09:29:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 787 transitions. [2022-11-20 09:29:16,412 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 787 transitions. Word has length 30 [2022-11-20 09:29:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:16,413 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 787 transitions. [2022-11-20 09:29:16,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 787 transitions. [2022-11-20 09:29:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:29:16,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:16,414 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, 1, 1, 1, 1] [2022-11-20 09:29:16,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:29:16,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1762570929, now seen corresponding path program 1 times [2022-11-20 09:29:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:16,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188464219] [2022-11-20 09:29:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:16,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188464219] [2022-11-20 09:29:16,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188464219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781064237] [2022-11-20 09:29:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:16,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:16,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:16,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:29:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:29:17,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:17,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:17,171 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 09:29:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:17,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:17,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781064237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:17,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:17,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2022-11-20 09:29:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146098169] [2022-11-20 09:29:17,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:29:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:29:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:29:17,427 INFO L87 Difference]: Start difference. First operand 572 states and 787 transitions. Second operand has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:18,146 INFO L93 Difference]: Finished difference Result 728 states and 927 transitions. [2022-11-20 09:29:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-20 09:29:18,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:18,150 INFO L225 Difference]: With dead ends: 728 [2022-11-20 09:29:18,150 INFO L226 Difference]: Without dead ends: 728 [2022-11-20 09:29:18,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:29:18,151 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 486 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:18,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 247 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 406 Invalid, 0 Unknown, 124 Unchecked, 0.4s Time] [2022-11-20 09:29:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-20 09:29:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 645. [2022-11-20 09:29:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 585 states have (on average 1.3948717948717948) internal successors, (816), 614 states have internal predecessors, (816), 15 states have call successors, (15), 15 states have call predecessors, (15), 30 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) [2022-11-20 09:29:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 876 transitions. [2022-11-20 09:29:18,173 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 876 transitions. Word has length 31 [2022-11-20 09:29:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:18,174 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 876 transitions. [2022-11-20 09:29:18,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 876 transitions. [2022-11-20 09:29:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 09:29:18,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:18,175 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:18,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:18,385 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -132941611, now seen corresponding path program 1 times [2022-11-20 09:29:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:18,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28697991] [2022-11-20 09:29:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28697991] [2022-11-20 09:29:18,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28697991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189094219] [2022-11-20 09:29:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:18,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:18,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:18,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:29:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:18,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 09:29:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:19,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:19,162 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 09:29:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:19,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:19,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189094219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:19,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:19,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2022-11-20 09:29:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273265652] [2022-11-20 09:29:19,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:19,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:29:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:19,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:29:19,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:19,576 INFO L87 Difference]: Start difference. First operand 645 states and 876 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:20,621 INFO L93 Difference]: Finished difference Result 693 states and 894 transitions. [2022-11-20 09:29:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:29:20,622 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-11-20 09:29:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:20,625 INFO L225 Difference]: With dead ends: 693 [2022-11-20 09:29:20,625 INFO L226 Difference]: Without dead ends: 693 [2022-11-20 09:29:20,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 09:29:20,626 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 594 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:20,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 282 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 484 Invalid, 0 Unknown, 90 Unchecked, 0.4s Time] [2022-11-20 09:29:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-20 09:29:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 645. [2022-11-20 09:29:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 585 states have (on average 1.3726495726495727) internal successors, (803), 614 states have internal predecessors, (803), 15 states have call successors, (15), 15 states have call predecessors, (15), 30 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) [2022-11-20 09:29:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 863 transitions. [2022-11-20 09:29:20,643 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 863 transitions. Word has length 35 [2022-11-20 09:29:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:20,643 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 863 transitions. [2022-11-20 09:29:20,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:29:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 863 transitions. [2022-11-20 09:29:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:29:20,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:20,644 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:20,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:20,849 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1525473162, now seen corresponding path program 1 times [2022-11-20 09:29:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646056133] [2022-11-20 09:29:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 09:29:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:21,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646056133] [2022-11-20 09:29:21,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646056133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593919230] [2022-11-20 09:29:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:21,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:21,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:21,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:21,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:29:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:29:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:21,322 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:29:21,322 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 09:29:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:29:21,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:21,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-20 09:29:21,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-20 09:29:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:29:21,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593919230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:21,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:21,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2022-11-20 09:29:21,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636678138] [2022-11-20 09:29:21,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:21,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:29:21,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:21,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:29:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:29:21,681 INFO L87 Difference]: Start difference. First operand 645 states and 863 transitions. Second operand has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 09:29:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:22,351 INFO L93 Difference]: Finished difference Result 718 states and 921 transitions. [2022-11-20 09:29:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:29:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-11-20 09:29:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:22,354 INFO L225 Difference]: With dead ends: 718 [2022-11-20 09:29:22,354 INFO L226 Difference]: Without dead ends: 718 [2022-11-20 09:29:22,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:29:22,355 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 641 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:22,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 175 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 328 Invalid, 0 Unknown, 27 Unchecked, 0.3s Time] [2022-11-20 09:29:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-20 09:29:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 652. [2022-11-20 09:29:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 594 states have (on average 1.3703703703703705) internal successors, (814), 621 states have internal predecessors, (814), 15 states have call successors, (15), 15 states have call predecessors, (15), 28 states have return successors, (41), 15 states have call predecessors, (41), 15 states have call successors, (41) [2022-11-20 09:29:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 870 transitions. [2022-11-20 09:29:22,375 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 870 transitions. Word has length 36 [2022-11-20 09:29:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:22,376 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 870 transitions. [2022-11-20 09:29:22,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 09:29:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 870 transitions. [2022-11-20 09:29:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 09:29:22,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:22,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:22,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 09:29:22,582 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 45027747, now seen corresponding path program 1 times [2022-11-20 09:29:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:22,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129976821] [2022-11-20 09:29:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:23,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:23,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129976821] [2022-11-20 09:29:23,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129976821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:23,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:23,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:29:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224096633] [2022-11-20 09:29:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:23,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:29:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:29:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:23,126 INFO L87 Difference]: Start difference. First operand 652 states and 870 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:23,637 INFO L93 Difference]: Finished difference Result 511 states and 658 transitions. [2022-11-20 09:29:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-20 09:29:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:23,641 INFO L225 Difference]: With dead ends: 511 [2022-11-20 09:29:23,641 INFO L226 Difference]: Without dead ends: 511 [2022-11-20 09:29:23,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:29:23,643 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 216 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:23,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 230 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:29:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-20 09:29:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 429. [2022-11-20 09:29:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 386 states have (on average 1.38860103626943) internal successors, (536), 408 states have internal predecessors, (536), 10 states have call successors, (10), 10 states have call predecessors, (10), 18 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-20 09:29:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 573 transitions. [2022-11-20 09:29:23,659 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 573 transitions. Word has length 37 [2022-11-20 09:29:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 573 transitions. [2022-11-20 09:29:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 573 transitions. [2022-11-20 09:29:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 09:29:23,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:23,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 09:29:23,661 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 634414932, now seen corresponding path program 1 times [2022-11-20 09:29:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:23,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841422077] [2022-11-20 09:29:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:23,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:23,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:23,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841422077] [2022-11-20 09:29:23,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841422077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:23,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044590927] [2022-11-20 09:29:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:23,783 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:23,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:29:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:23,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:29:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:23,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044590927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:24,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-11-20 09:29:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611756769] [2022-11-20 09:29:24,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:24,015 INFO L87 Difference]: Start difference. First operand 429 states and 573 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:24,122 INFO L93 Difference]: Finished difference Result 448 states and 586 transitions. [2022-11-20 09:29:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-20 09:29:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:24,131 INFO L225 Difference]: With dead ends: 448 [2022-11-20 09:29:24,132 INFO L226 Difference]: Without dead ends: 448 [2022-11-20 09:29:24,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:24,133 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:24,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 53 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:29:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-20 09:29:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2022-11-20 09:29:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 385 states have (on average 1.3688311688311687) internal successors, (527), 405 states have internal predecessors, (527), 10 states have call successors, (10), 10 states have call predecessors, (10), 18 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-20 09:29:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 564 transitions. [2022-11-20 09:29:24,157 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 564 transitions. Word has length 40 [2022-11-20 09:29:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:24,157 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 564 transitions. [2022-11-20 09:29:24,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 564 transitions. [2022-11-20 09:29:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 09:29:24,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:24,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:24,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:24,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 09:29:24,365 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1807973484, now seen corresponding path program 1 times [2022-11-20 09:29:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:24,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61687844] [2022-11-20 09:29:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:24,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61687844] [2022-11-20 09:29:24,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61687844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551303888] [2022-11-20 09:29:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:24,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:24,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:24,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:24,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:29:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:29:24,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:24,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:24,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551303888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:24,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:24,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-11-20 09:29:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352930516] [2022-11-20 09:29:24,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:24,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:24,695 INFO L87 Difference]: Start difference. First operand 426 states and 564 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:24,801 INFO L93 Difference]: Finished difference Result 445 states and 576 transitions. [2022-11-20 09:29:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:24,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-11-20 09:29:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:24,803 INFO L225 Difference]: With dead ends: 445 [2022-11-20 09:29:24,803 INFO L226 Difference]: Without dead ends: 445 [2022-11-20 09:29:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:24,804 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:24,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 43 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:29:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-20 09:29:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 424. [2022-11-20 09:29:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 385 states have (on average 1.3454545454545455) internal successors, (518), 403 states have internal predecessors, (518), 10 states have call successors, (10), 10 states have call predecessors, (10), 18 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-20 09:29:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 555 transitions. [2022-11-20 09:29:24,815 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 555 transitions. Word has length 41 [2022-11-20 09:29:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:24,816 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 555 transitions. [2022-11-20 09:29:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 555 transitions. [2022-11-20 09:29:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 09:29:24,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:24,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:24,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:25,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 09:29:25,023 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash -212603050, now seen corresponding path program 1 times [2022-11-20 09:29:25,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723256030] [2022-11-20 09:29:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:25,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:25,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723256030] [2022-11-20 09:29:25,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723256030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:25,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031712346] [2022-11-20 09:29:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:25,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:25,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:25,207 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:25,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:29:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:29:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:25,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:29:25,362 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:25,362 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 09:29:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:25,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:25,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031712346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:25,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:25,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2022-11-20 09:29:25,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820929275] [2022-11-20 09:29:25,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:25,546 INFO L87 Difference]: Start difference. First operand 424 states and 555 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:25,699 INFO L93 Difference]: Finished difference Result 460 states and 579 transitions. [2022-11-20 09:29:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:25,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 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 09:29:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:25,702 INFO L225 Difference]: With dead ends: 460 [2022-11-20 09:29:25,702 INFO L226 Difference]: Without dead ends: 460 [2022-11-20 09:29:25,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:25,703 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 83 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:25,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 108 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-20 09:29:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-20 09:29:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 430. [2022-11-20 09:29:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 391 states have (on average 1.3273657289002558) internal successors, (519), 409 states have internal predecessors, (519), 10 states have call successors, (10), 10 states have call predecessors, (10), 18 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-20 09:29:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 556 transitions. [2022-11-20 09:29:25,713 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 556 transitions. Word has length 42 [2022-11-20 09:29:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:25,714 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 556 transitions. [2022-11-20 09:29:25,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 556 transitions. [2022-11-20 09:29:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 09:29:25,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:25,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:25,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:25,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 09:29:25,929 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1366889029, now seen corresponding path program 1 times [2022-11-20 09:29:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931596201] [2022-11-20 09:29:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931596201] [2022-11-20 09:29:26,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931596201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071028086] [2022-11-20 09:29:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:26,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:26,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:26,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:29:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:26,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:26,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:26,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071028086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:26,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:26,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-20 09:29:26,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368389180] [2022-11-20 09:29:26,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:26,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:26,166 INFO L87 Difference]: Start difference. First operand 430 states and 556 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:26,203 INFO L93 Difference]: Finished difference Result 489 states and 605 transitions. [2022-11-20 09:29:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:26,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-20 09:29:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:26,206 INFO L225 Difference]: With dead ends: 489 [2022-11-20 09:29:26,207 INFO L226 Difference]: Without dead ends: 489 [2022-11-20 09:29:26,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:26,208 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 62 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:26,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 151 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-20 09:29:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 420. [2022-11-20 09:29:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 381 states have (on average 1.2965879265091864) internal successors, (494), 399 states have internal predecessors, (494), 10 states have call successors, (10), 10 states have call predecessors, (10), 18 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-20 09:29:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 531 transitions. [2022-11-20 09:29:26,240 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 531 transitions. Word has length 45 [2022-11-20 09:29:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:26,240 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 531 transitions. [2022-11-20 09:29:26,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:29:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 531 transitions. [2022-11-20 09:29:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 09:29:26,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:26,241 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:26,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:26,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:26,442 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:26,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash -624108164, now seen corresponding path program 1 times [2022-11-20 09:29:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:26,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458270176] [2022-11-20 09:29:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:26,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458270176] [2022-11-20 09:29:26,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458270176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:26,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935358325] [2022-11-20 09:29:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:26,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:26,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:26,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:29:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:29:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:26,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:26,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935358325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:26,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:26,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 11 [2022-11-20 09:29:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854912988] [2022-11-20 09:29:26,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:29:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:29:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:29:26,937 INFO L87 Difference]: Start difference. First operand 420 states and 531 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:29:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:27,247 INFO L93 Difference]: Finished difference Result 339 states and 405 transitions. [2022-11-20 09:29:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:29:27,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2022-11-20 09:29:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:27,249 INFO L225 Difference]: With dead ends: 339 [2022-11-20 09:29:27,249 INFO L226 Difference]: Without dead ends: 339 [2022-11-20 09:29:27,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:29:27,250 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 241 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:27,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 127 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:29:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-20 09:29:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2022-11-20 09:29:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 292 states have (on average 1.2602739726027397) internal successors, (368), 307 states have internal predecessors, (368), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-20 09:29:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2022-11-20 09:29:27,256 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 393 transitions. Word has length 48 [2022-11-20 09:29:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:27,257 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 393 transitions. [2022-11-20 09:29:27,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:29:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 393 transitions. [2022-11-20 09:29:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 09:29:27,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:27,258 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:27,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 09:29:27,467 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -377504153, now seen corresponding path program 1 times [2022-11-20 09:29:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586343602] [2022-11-20 09:29:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586343602] [2022-11-20 09:29:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586343602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747640420] [2022-11-20 09:29:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:27,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:27,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:27,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:29:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:29:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:28,383 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 09:29:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:28,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:32,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747640420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:32,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:32,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 13 [2022-11-20 09:29:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577856837] [2022-11-20 09:29:32,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:32,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:29:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:29:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:32,641 INFO L87 Difference]: Start difference. First operand 324 states and 393 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:33,327 INFO L93 Difference]: Finished difference Result 352 states and 407 transitions. [2022-11-20 09:29:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:33,328 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2022-11-20 09:29:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:33,329 INFO L225 Difference]: With dead ends: 352 [2022-11-20 09:29:33,329 INFO L226 Difference]: Without dead ends: 352 [2022-11-20 09:29:33,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:29:33,330 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 345 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:33,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 248 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 290 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-20 09:29:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-20 09:29:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 323. [2022-11-20 09:29:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 292 states have (on average 1.25) internal successors, (365), 306 states have internal predecessors, (365), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 388 transitions. [2022-11-20 09:29:33,337 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 388 transitions. Word has length 48 [2022-11-20 09:29:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:33,338 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 388 transitions. [2022-11-20 09:29:33,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 388 transitions. [2022-11-20 09:29:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:29:33,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:33,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:33,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 09:29:33,540 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2004239674, now seen corresponding path program 1 times [2022-11-20 09:29:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459391085] [2022-11-20 09:29:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:29:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:34,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459391085] [2022-11-20 09:29:34,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459391085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:34,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127046458] [2022-11-20 09:29:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:34,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:34,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:34,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:29:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 09:29:34,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:34,898 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 09:29:35,004 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 09:29:35,007 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 09:29:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:35,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:35,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127046458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:35,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:35,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 18 [2022-11-20 09:29:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049830019] [2022-11-20 09:29:35,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:35,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:29:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:29:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:35,233 INFO L87 Difference]: Start difference. First operand 323 states and 388 transitions. Second operand has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:36,930 INFO L93 Difference]: Finished difference Result 390 states and 440 transitions. [2022-11-20 09:29:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:29:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-11-20 09:29:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:36,933 INFO L225 Difference]: With dead ends: 390 [2022-11-20 09:29:36,933 INFO L226 Difference]: Without dead ends: 390 [2022-11-20 09:29:36,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=427, Invalid=1465, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 09:29:36,934 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 514 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:36,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 307 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 593 Invalid, 0 Unknown, 125 Unchecked, 0.6s Time] [2022-11-20 09:29:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-20 09:29:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 323. [2022-11-20 09:29:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 292 states have (on average 1.2397260273972603) internal successors, (362), 306 states have internal predecessors, (362), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 385 transitions. [2022-11-20 09:29:36,942 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 385 transitions. Word has length 50 [2022-11-20 09:29:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:36,942 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 385 transitions. [2022-11-20 09:29:36,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 385 transitions. [2022-11-20 09:29:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:29:36,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:36,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:36,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:37,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 09:29:37,149 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2111001345, now seen corresponding path program 1 times [2022-11-20 09:29:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:37,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396461549] [2022-11-20 09:29:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396461549] [2022-11-20 09:29:37,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396461549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167000262] [2022-11-20 09:29:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:37,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:37,496 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:37,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:29:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:29:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:37,775 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:29:37,775 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 11 treesize of output 11 [2022-11-20 09:29:37,919 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:37,919 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 09:29:37,981 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:29:37,981 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 09:29:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:38,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:38,116 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 09:29:38,117 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 56 treesize of output 53 [2022-11-20 09:29:38,370 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 09:29:38,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 105 [2022-11-20 09:29:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:38,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167000262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:38,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:38,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 25 [2022-11-20 09:29:38,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372548786] [2022-11-20 09:29:38,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:29:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:29:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:29:38,645 INFO L87 Difference]: Start difference. First operand 323 states and 385 transitions. Second operand has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 09:29:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:38,977 INFO L93 Difference]: Finished difference Result 336 states and 397 transitions. [2022-11-20 09:29:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 51 [2022-11-20 09:29:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:38,979 INFO L225 Difference]: With dead ends: 336 [2022-11-20 09:29:38,979 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 09:29:38,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:29:38,981 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 367 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:38,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 84 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 210 Invalid, 0 Unknown, 10 Unchecked, 0.2s Time] [2022-11-20 09:29:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 09:29:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 322. [2022-11-20 09:29:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.2328767123287672) internal successors, (360), 305 states have internal predecessors, (360), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 383 transitions. [2022-11-20 09:29:38,989 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 383 transitions. Word has length 51 [2022-11-20 09:29:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:38,989 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 383 transitions. [2022-11-20 09:29:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 24 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 09:29:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 383 transitions. [2022-11-20 09:29:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:29:38,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:38,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:39,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:39,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:39,196 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2111001344, now seen corresponding path program 1 times [2022-11-20 09:29:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:39,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185332894] [2022-11-20 09:29:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:39,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185332894] [2022-11-20 09:29:39,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185332894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966890448] [2022-11-20 09:29:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:39,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:39,464 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:39,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 09:29:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:39,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:29:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:39,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:39,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:29:39,766 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:29:39,766 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 11 treesize of output 11 [2022-11-20 09:29:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:39,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:39,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966890448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:39,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:39,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2022-11-20 09:29:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769843489] [2022-11-20 09:29:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:29:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:29:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:29:39,829 INFO L87 Difference]: Start difference. First operand 322 states and 383 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:40,005 INFO L93 Difference]: Finished difference Result 371 states and 429 transitions. [2022-11-20 09:29:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:29:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2022-11-20 09:29:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:40,007 INFO L225 Difference]: With dead ends: 371 [2022-11-20 09:29:40,007 INFO L226 Difference]: Without dead ends: 371 [2022-11-20 09:29:40,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:29:40,008 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 211 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:40,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 64 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:29:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-20 09:29:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 322. [2022-11-20 09:29:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.2226027397260273) internal successors, (357), 305 states have internal predecessors, (357), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 380 transitions. [2022-11-20 09:29:40,031 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 380 transitions. Word has length 51 [2022-11-20 09:29:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:40,031 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 380 transitions. [2022-11-20 09:29:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 380 transitions. [2022-11-20 09:29:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:29:40,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:40,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:40,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 09:29:40,248 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash 410026143, now seen corresponding path program 1 times [2022-11-20 09:29:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713869401] [2022-11-20 09:29:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:40,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:40,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713869401] [2022-11-20 09:29:40,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713869401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:40,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280684677] [2022-11-20 09:29:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:40,494 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 09:29:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:29:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:40,690 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:40,692 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 09:29:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:40,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:40,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280684677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:40,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:40,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2022-11-20 09:29:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799342043] [2022-11-20 09:29:40,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:40,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:29:40,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:29:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:29:40,939 INFO L87 Difference]: Start difference. First operand 322 states and 380 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:29:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:41,858 INFO L93 Difference]: Finished difference Result 343 states and 396 transitions. [2022-11-20 09:29:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-20 09:29:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:41,860 INFO L225 Difference]: With dead ends: 343 [2022-11-20 09:29:41,860 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 09:29:41,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:29:41,861 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 230 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:41,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 140 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 199 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-20 09:29:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 09:29:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 322. [2022-11-20 09:29:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.2157534246575343) internal successors, (355), 305 states have internal predecessors, (355), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 378 transitions. [2022-11-20 09:29:41,868 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 378 transitions. Word has length 51 [2022-11-20 09:29:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:41,868 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 378 transitions. [2022-11-20 09:29:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:29:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 378 transitions. [2022-11-20 09:29:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:29:41,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:41,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:41,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:42,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:42,080 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2001887703, now seen corresponding path program 2 times [2022-11-20 09:29:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:42,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934577242] [2022-11-20 09:29:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:42,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:42,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934577242] [2022-11-20 09:29:42,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934577242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:42,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710636015] [2022-11-20 09:29:42,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:42,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:42,303 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:42,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 09:29:42,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:42,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:42,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:29:42,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:42,536 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:42,536 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 09:29:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:42,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:42,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710636015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:42,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:42,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2022-11-20 09:29:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130792309] [2022-11-20 09:29:42,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:29:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:29:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:29:42,643 INFO L87 Difference]: Start difference. First operand 322 states and 378 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:29:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:43,513 INFO L93 Difference]: Finished difference Result 342 states and 391 transitions. [2022-11-20 09:29:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-20 09:29:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:43,516 INFO L225 Difference]: With dead ends: 342 [2022-11-20 09:29:43,516 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 09:29:43,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:43,517 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 156 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:43,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 164 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 257 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 09:29:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 09:29:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 322. [2022-11-20 09:29:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.2123287671232876) internal successors, (354), 305 states have internal predecessors, (354), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 377 transitions. [2022-11-20 09:29:43,524 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 377 transitions. Word has length 51 [2022-11-20 09:29:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:43,525 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 377 transitions. [2022-11-20 09:29:43,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:29:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 377 transitions. [2022-11-20 09:29:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:29:43,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:43,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:43,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:43,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:43,736 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1016532274, now seen corresponding path program 1 times [2022-11-20 09:29:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:43,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122440428] [2022-11-20 09:29:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:44,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122440428] [2022-11-20 09:29:44,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122440428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187017424] [2022-11-20 09:29:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:44,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:44,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:44,852 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 09:29:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 09:29:44,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:45,226 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:29:45,227 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 11 treesize of output 11 [2022-11-20 09:29:45,542 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-20 09:29:45,542 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 21 treesize of output 29 [2022-11-20 09:29:45,604 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 09:29:45,604 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 26 [2022-11-20 09:29:45,796 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 09:29:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:45,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:45,969 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-20 09:29:45,969 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 88 treesize of output 81 [2022-11-20 09:29:46,348 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2022-11-20 09:29:46,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 185 [2022-11-20 09:29:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:46,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187017424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:46,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 14] total 44 [2022-11-20 09:29:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180194640] [2022-11-20 09:29:46,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:46,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 09:29:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 09:29:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 09:29:46,832 INFO L87 Difference]: Start difference. First operand 322 states and 377 transitions. Second operand has 46 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:48,155 INFO L93 Difference]: Finished difference Result 373 states and 428 transitions. [2022-11-20 09:29:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:29:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2022-11-20 09:29:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:48,157 INFO L225 Difference]: With dead ends: 373 [2022-11-20 09:29:48,158 INFO L226 Difference]: Without dead ends: 373 [2022-11-20 09:29:48,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=506, Invalid=2574, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 09:29:48,159 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 797 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 214 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 811 Invalid, 0 Unknown, 21 Unchecked, 0.6s Time] [2022-11-20 09:29:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-20 09:29:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 322. [2022-11-20 09:29:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.2054794520547945) internal successors, (352), 305 states have internal predecessors, (352), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 375 transitions. [2022-11-20 09:29:48,167 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 375 transitions. Word has length 52 [2022-11-20 09:29:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:48,167 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 375 transitions. [2022-11-20 09:29:48,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 375 transitions. [2022-11-20 09:29:48,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:29:48,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:48,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:48,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:48,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:48,374 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -174091406, now seen corresponding path program 1 times [2022-11-20 09:29:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:48,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964917267] [2022-11-20 09:29:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:48,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:29:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964917267] [2022-11-20 09:29:48,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964917267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552999069] [2022-11-20 09:29:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:48,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:48,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:48,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 09:29:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:29:48,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:48,947 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 09:29:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:29:49,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:49,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552999069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:49,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:49,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2022-11-20 09:29:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077268760] [2022-11-20 09:29:49,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:29:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:29:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:49,306 INFO L87 Difference]: Start difference. First operand 322 states and 375 transitions. Second operand has 17 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:29:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:49,894 INFO L93 Difference]: Finished difference Result 353 states and 395 transitions. [2022-11-20 09:29:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2022-11-20 09:29:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:49,896 INFO L225 Difference]: With dead ends: 353 [2022-11-20 09:29:49,896 INFO L226 Difference]: Without dead ends: 353 [2022-11-20 09:29:49,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 09:29:49,896 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 390 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:49,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 261 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 310 Invalid, 0 Unknown, 71 Unchecked, 0.3s Time] [2022-11-20 09:29:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-20 09:29:49,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 322. [2022-11-20 09:29:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.1849315068493151) internal successors, (346), 305 states have internal predecessors, (346), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 369 transitions. [2022-11-20 09:29:49,903 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 369 transitions. Word has length 52 [2022-11-20 09:29:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:49,903 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 369 transitions. [2022-11-20 09:29:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:29:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 369 transitions. [2022-11-20 09:29:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:29:49,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:49,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:49,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:50,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:50,109 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1928976600, now seen corresponding path program 2 times [2022-11-20 09:29:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:50,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829673821] [2022-11-20 09:29:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:50,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:29:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:50,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829673821] [2022-11-20 09:29:50,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829673821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:50,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045489208] [2022-11-20 09:29:50,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:50,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:50,430 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:50,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 09:29:50,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:50,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:50,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:29:50,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:50,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:50,737 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 09:29:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:50,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:50,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045489208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:50,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:50,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2022-11-20 09:29:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428048788] [2022-11-20 09:29:50,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:50,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:29:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:29:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:29:50,948 INFO L87 Difference]: Start difference. First operand 322 states and 369 transitions. Second operand has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:51,910 INFO L93 Difference]: Finished difference Result 349 states and 389 transitions. [2022-11-20 09:29:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:29:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-11-20 09:29:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:51,912 INFO L225 Difference]: With dead ends: 349 [2022-11-20 09:29:51,912 INFO L226 Difference]: Without dead ends: 349 [2022-11-20 09:29:51,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=613, Unknown=1, NotChecked=0, Total=812 [2022-11-20 09:29:51,913 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 309 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:51,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 223 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 291 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-11-20 09:29:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-20 09:29:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 322. [2022-11-20 09:29:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 292 states have (on average 1.178082191780822) internal successors, (344), 305 states have internal predecessors, (344), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 367 transitions. [2022-11-20 09:29:51,920 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 367 transitions. Word has length 52 [2022-11-20 09:29:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:51,920 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 367 transitions. [2022-11-20 09:29:51,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 367 transitions. [2022-11-20 09:29:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 09:29:51,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:51,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:51,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:52,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 09:29:52,127 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1929937680, now seen corresponding path program 1 times [2022-11-20 09:29:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:52,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200010902] [2022-11-20 09:29:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:52,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200010902] [2022-11-20 09:29:52,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200010902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406144541] [2022-11-20 09:29:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:52,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:52,585 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:52,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 09:29:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 09:29:52,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:52,816 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:29:52,816 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 09:29:52,947 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| Int) (v_ArrVal_263 Int)) (= |c_#valid| (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| 1) |c_old(~global~0.base)| v_ArrVal_263))) is different from true [2022-11-20 09:29:52,979 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 09:29:52,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 09:29:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-20 09:29:53,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:53,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406144541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:53,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:53,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2022-11-20 09:29:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335927521] [2022-11-20 09:29:53,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:29:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:29:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=409, Unknown=1, NotChecked=42, Total=552 [2022-11-20 09:29:53,400 INFO L87 Difference]: Start difference. First operand 322 states and 367 transitions. Second operand has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:54,226 INFO L93 Difference]: Finished difference Result 350 states and 391 transitions. [2022-11-20 09:29:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:29:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-11-20 09:29:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:54,228 INFO L225 Difference]: With dead ends: 350 [2022-11-20 09:29:54,229 INFO L226 Difference]: Without dead ends: 350 [2022-11-20 09:29:54,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=1071, Unknown=2, NotChecked=72, Total=1482 [2022-11-20 09:29:54,230 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 348 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:54,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 309 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 337 Invalid, 0 Unknown, 190 Unchecked, 0.2s Time] [2022-11-20 09:29:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-20 09:29:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 321. [2022-11-20 09:29:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 292 states have (on average 1.1712328767123288) internal successors, (342), 304 states have internal predecessors, (342), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 365 transitions. [2022-11-20 09:29:54,237 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 365 transitions. Word has length 54 [2022-11-20 09:29:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:54,237 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 365 transitions. [2022-11-20 09:29:54,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.473684210526316) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:29:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 365 transitions. [2022-11-20 09:29:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 09:29:54,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:54,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:54,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 09:29:54,444 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 301474113, now seen corresponding path program 1 times [2022-11-20 09:29:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546590215] [2022-11-20 09:29:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:54,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:54,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546590215] [2022-11-20 09:29:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546590215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688608154] [2022-11-20 09:29:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:54,873 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:54,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 09:29:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:55,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 09:29:55,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:55,576 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:29:55,577 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 09:29:55,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 09:29:55,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 09:29:55,605 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:29:55,605 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 09:29:55,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 09:29:55,900 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:29:55,900 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 09:29:55,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:55,911 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 15 treesize of output 19 [2022-11-20 09:29:56,148 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:29:56,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 21 [2022-11-20 09:29:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:56,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:56,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 09:29:56,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688608154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:56,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:56,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 27 [2022-11-20 09:29:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939253538] [2022-11-20 09:29:56,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:56,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 09:29:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 09:29:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=984, Unknown=2, NotChecked=0, Total=1122 [2022-11-20 09:29:56,501 INFO L87 Difference]: Start difference. First operand 321 states and 365 transitions. Second operand has 29 states, 24 states have (on average 4.166666666666667) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:29:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:59,091 INFO L93 Difference]: Finished difference Result 353 states and 390 transitions. [2022-11-20 09:29:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 09:29:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 4.166666666666667) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-11-20 09:29:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:59,093 INFO L225 Difference]: With dead ends: 353 [2022-11-20 09:29:59,093 INFO L226 Difference]: Without dead ends: 353 [2022-11-20 09:29:59,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=623, Invalid=3533, Unknown=4, NotChecked=0, Total=4160 [2022-11-20 09:29:59,095 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 508 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 782 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 806 Invalid, 0 Unknown, 520 Unchecked, 0.7s Time] [2022-11-20 09:29:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-20 09:29:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 320. [2022-11-20 09:29:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 292 states have (on average 1.1643835616438356) internal successors, (340), 303 states have internal predecessors, (340), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:29:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 363 transitions. [2022-11-20 09:29:59,103 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 363 transitions. Word has length 55 [2022-11-20 09:29:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:59,103 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 363 transitions. [2022-11-20 09:29:59,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 4.166666666666667) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:29:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 363 transitions. [2022-11-20 09:29:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 09:29:59,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:59,105 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:59,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:59,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 09:29:59,310 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:29:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1039811026, now seen corresponding path program 2 times [2022-11-20 09:29:59,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:59,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551751764] [2022-11-20 09:29:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:59,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551751764] [2022-11-20 09:29:59,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551751764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162689328] [2022-11-20 09:29:59,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:59,639 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:59,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 09:29:59,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:59,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:59,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:29:59,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:00,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:00,208 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 09:30:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:30:00,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:06,606 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:30:06,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162689328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:06,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:06,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2022-11-20 09:30:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516188871] [2022-11-20 09:30:06,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:06,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:30:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:30:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:30:06,608 INFO L87 Difference]: Start difference. First operand 320 states and 363 transitions. Second operand has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:30:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:07,396 INFO L93 Difference]: Finished difference Result 341 states and 379 transitions. [2022-11-20 09:30:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:30:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2022-11-20 09:30:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:07,398 INFO L225 Difference]: With dead ends: 341 [2022-11-20 09:30:07,398 INFO L226 Difference]: Without dead ends: 341 [2022-11-20 09:30:07,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:30:07,399 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 412 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:07,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 270 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 355 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-20 09:30:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-20 09:30:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 320. [2022-11-20 09:30:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 292 states have (on average 1.154109589041096) internal successors, (337), 303 states have internal predecessors, (337), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:30:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 360 transitions. [2022-11-20 09:30:07,405 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 360 transitions. Word has length 56 [2022-11-20 09:30:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 360 transitions. [2022-11-20 09:30:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:30:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 360 transitions. [2022-11-20 09:30:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 09:30:07,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:07,407 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:07,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 09:30:07,613 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash 717947847, now seen corresponding path program 1 times [2022-11-20 09:30:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412221458] [2022-11-20 09:30:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:30:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:30:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:08,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412221458] [2022-11-20 09:30:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412221458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:08,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633505626] [2022-11-20 09:30:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:08,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:08,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:08,290 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:08,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 09:30:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:08,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 09:30:08,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:08,643 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:30:08,643 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 09:30:08,893 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:30:08,894 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 11 treesize of output 11 [2022-11-20 09:30:09,002 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 09:30:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:09,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:30:09,279 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:30:09,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 21 [2022-11-20 09:30:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:09,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:09,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 09:30:09,652 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 09:30:09,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 09:30:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633505626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:09,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2022-11-20 09:30:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370902599] [2022-11-20 09:30:09,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 09:30:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 09:30:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1019, Unknown=4, NotChecked=0, Total=1190 [2022-11-20 09:30:09,746 INFO L87 Difference]: Start difference. First operand 320 states and 360 transitions. Second operand has 30 states, 27 states have (on average 4.0) internal successors, (108), 24 states have internal predecessors, (108), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:11,689 INFO L93 Difference]: Finished difference Result 344 states and 378 transitions. [2022-11-20 09:30:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 09:30:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.0) internal successors, (108), 24 states have internal predecessors, (108), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2022-11-20 09:30:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:11,691 INFO L225 Difference]: With dead ends: 344 [2022-11-20 09:30:11,691 INFO L226 Difference]: Without dead ends: 344 [2022-11-20 09:30:11,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1012, Invalid=3540, Unknown=4, NotChecked=0, Total=4556 [2022-11-20 09:30:11,693 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 907 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:11,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 437 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 357 Invalid, 0 Unknown, 284 Unchecked, 0.4s Time] [2022-11-20 09:30:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-20 09:30:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 317. [2022-11-20 09:30:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 300 states have internal predecessors, (333), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:30:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 356 transitions. [2022-11-20 09:30:11,702 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 356 transitions. Word has length 59 [2022-11-20 09:30:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:11,703 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 356 transitions. [2022-11-20 09:30:11,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.0) internal successors, (108), 24 states have internal predecessors, (108), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 356 transitions. [2022-11-20 09:30:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 09:30:11,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:11,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:11,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:11,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 09:30:11,910 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash 781546727, now seen corresponding path program 1 times [2022-11-20 09:30:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133847427] [2022-11-20 09:30:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:30:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:30:12,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:12,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133847427] [2022-11-20 09:30:12,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133847427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:12,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079048414] [2022-11-20 09:30:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:12,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:12,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:12,622 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:12,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 09:30:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 09:30:12,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:13,064 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:30:13,064 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 09:30:13,428 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 09:30:13,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 09:30:13,609 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 09:30:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:13,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:13,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079048414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:13,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:13,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2022-11-20 09:30:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464642461] [2022-11-20 09:30:13,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 09:30:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 09:30:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=812, Unknown=4, NotChecked=0, Total=930 [2022-11-20 09:30:13,804 INFO L87 Difference]: Start difference. First operand 317 states and 356 transitions. Second operand has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:15,566 INFO L93 Difference]: Finished difference Result 340 states and 375 transitions. [2022-11-20 09:30:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 09:30:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2022-11-20 09:30:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:15,569 INFO L225 Difference]: With dead ends: 340 [2022-11-20 09:30:15,569 INFO L226 Difference]: Without dead ends: 340 [2022-11-20 09:30:15,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=659, Invalid=3369, Unknown=4, NotChecked=0, Total=4032 [2022-11-20 09:30:15,571 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 487 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:15,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 399 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 424 Invalid, 0 Unknown, 130 Unchecked, 0.3s Time] [2022-11-20 09:30:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-20 09:30:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 316. [2022-11-20 09:30:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 292 states have (on average 1.1335616438356164) internal successors, (331), 299 states have internal predecessors, (331), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:30:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 354 transitions. [2022-11-20 09:30:15,577 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 354 transitions. Word has length 60 [2022-11-20 09:30:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:15,578 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 354 transitions. [2022-11-20 09:30:15,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.4) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 354 transitions. [2022-11-20 09:30:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 09:30:15,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:15,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:15,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:15,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-20 09:30:15,785 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:15,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1541855194, now seen corresponding path program 1 times [2022-11-20 09:30:15,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:15,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6602284] [2022-11-20 09:30:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:30:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:30:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6602284] [2022-11-20 09:30:16,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6602284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848152781] [2022-11-20 09:30:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:16,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:16,621 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:16,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 09:30:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:16,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 09:30:16,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:17,488 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:30:17,488 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 09:30:17,519 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:30:17,519 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 09:30:18,137 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 09:30:18,310 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:30:18,311 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 09:30:18,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:30:18,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:30:18,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 09:30:18,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:30:18,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 09:30:18,986 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:30:18,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 21 [2022-11-20 09:30:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:19,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:19,424 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 22 treesize of output 14 [2022-11-20 09:30:19,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848152781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:19,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:19,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 33 [2022-11-20 09:30:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702777105] [2022-11-20 09:30:19,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:30:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:30:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1476, Unknown=2, NotChecked=0, Total=1640 [2022-11-20 09:30:19,542 INFO L87 Difference]: Start difference. First operand 316 states and 354 transitions. Second operand has 35 states, 32 states have (on average 3.5) internal successors, (112), 28 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:26,059 INFO L93 Difference]: Finished difference Result 364 states and 401 transitions. [2022-11-20 09:30:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 09:30:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.5) internal successors, (112), 28 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 61 [2022-11-20 09:30:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:26,061 INFO L225 Difference]: With dead ends: 364 [2022-11-20 09:30:26,061 INFO L226 Difference]: Without dead ends: 364 [2022-11-20 09:30:26,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1327, Invalid=7593, Unknown=10, NotChecked=0, Total=8930 [2022-11-20 09:30:26,064 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 823 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 531 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:26,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 455 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 654 Invalid, 0 Unknown, 531 Unchecked, 0.7s Time] [2022-11-20 09:30:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-20 09:30:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 315. [2022-11-20 09:30:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 292 states have (on average 1.13013698630137) internal successors, (330), 298 states have internal predecessors, (330), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:30:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 353 transitions. [2022-11-20 09:30:26,071 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 353 transitions. Word has length 61 [2022-11-20 09:30:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:26,072 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 353 transitions. [2022-11-20 09:30:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.5) internal successors, (112), 28 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:30:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 353 transitions. [2022-11-20 09:30:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 09:30:26,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:26,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:26,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:26,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:26,279 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 701075492, now seen corresponding path program 1 times [2022-11-20 09:30:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708901380] [2022-11-20 09:30:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:30:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:30:26,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:26,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708901380] [2022-11-20 09:30:26,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708901380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:26,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307997761] [2022-11-20 09:30:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:26,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:26,617 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:26,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 09:30:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:26,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 09:30:26,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:26,759 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 09:30:26,933 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:30:26,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 21 [2022-11-20 09:30:26,966 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 09:30:26,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 09:30:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:26,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:27,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307997761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:27,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:27,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-11-20 09:30:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180229227] [2022-11-20 09:30:27,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:27,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:30:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:30:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:30:27,077 INFO L87 Difference]: Start difference. First operand 315 states and 353 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:30:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:27,378 INFO L93 Difference]: Finished difference Result 332 states and 367 transitions. [2022-11-20 09:30:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:30:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2022-11-20 09:30:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:27,380 INFO L225 Difference]: With dead ends: 332 [2022-11-20 09:30:27,380 INFO L226 Difference]: Without dead ends: 332 [2022-11-20 09:30:27,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:30:27,381 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 90 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:27,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 159 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 166 Invalid, 0 Unknown, 113 Unchecked, 0.1s Time] [2022-11-20 09:30:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-20 09:30:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 271. [2022-11-20 09:30:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 250 states have (on average 1.124) internal successors, (281), 256 states have internal predecessors, (281), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 09:30:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 302 transitions. [2022-11-20 09:30:27,388 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 302 transitions. Word has length 66 [2022-11-20 09:30:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:27,388 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 302 transitions. [2022-11-20 09:30:27,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:30:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 302 transitions. [2022-11-20 09:30:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 09:30:27,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:27,390 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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 09:30:27,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:27,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:27,596 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1953429379, now seen corresponding path program 1 times [2022-11-20 09:30:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:27,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229469412] [2022-11-20 09:30:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:27,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:30:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:30:27,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:30:27,657 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:30:27,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-11-20 09:30:27,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-11-20 09:30:27,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-11-20 09:30:27,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-11-20 09:30:27,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-11-20 09:30:27,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2022-11-20 09:30:27,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (11 of 23 remaining) [2022-11-20 09:30:27,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (10 of 23 remaining) [2022-11-20 09:30:27,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (9 of 23 remaining) [2022-11-20 09:30:27,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (8 of 23 remaining) [2022-11-20 09:30:27,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (7 of 23 remaining) [2022-11-20 09:30:27,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (6 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (5 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (4 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (3 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE (2 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE (1 of 23 remaining) [2022-11-20 09:30:27,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE (0 of 23 remaining) [2022-11-20 09:30:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 09:30:27,667 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:27,670 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:30:27,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:30:27 BoogieIcfgContainer [2022-11-20 09:30:27,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:30:27,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:30:27,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:30:27,726 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:30:27,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:53" (3/4) ... [2022-11-20 09:30:27,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 09:30:27,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:30:27,730 INFO L158 Benchmark]: Toolchain (without parser) took 95668.35ms. Allocated memory was 132.1MB in the beginning and 249.6MB in the end (delta: 117.4MB). Free memory was 90.4MB in the beginning and 95.2MB in the end (delta: -4.8MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,731 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:30:27,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.04ms. Allocated memory is still 132.1MB. Free memory was 89.9MB in the beginning and 70.5MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.52ms. Allocated memory is still 132.1MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,731 INFO L158 Benchmark]: Boogie Preprocessor took 32.36ms. Allocated memory is still 132.1MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,732 INFO L158 Benchmark]: RCFGBuilder took 602.52ms. Allocated memory is still 132.1MB. Free memory was 66.4MB in the beginning and 51.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,732 INFO L158 Benchmark]: TraceAbstraction took 94487.43ms. Allocated memory was 132.1MB in the beginning and 249.6MB in the end (delta: 117.4MB). Free memory was 50.1MB in the beginning and 95.2MB in the end (delta: -45.1MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2022-11-20 09:30:27,732 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 249.6MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:30:27,733 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 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.04ms. Allocated memory is still 132.1MB. Free memory was 89.9MB in the beginning and 70.5MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.52ms. Allocated memory is still 132.1MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.36ms. Allocated memory is still 132.1MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 602.52ms. Allocated memory is still 132.1MB. Free memory was 66.4MB in the beginning and 51.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 94487.43ms. Allocated memory was 132.1MB in the beginning and 249.6MB in the end (delta: 117.4MB). Free memory was 50.1MB in the beginning and 95.2MB in the end (delta: -45.1MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 249.6MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; VAL [commands={6:0}, global={0:0}, state=0] [L723] CALL parse_input("c1") VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].name={1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].state_needed=0, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, commands[i].function={-1:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(global)=0, \old(global)=0, \old(state)=0, commands={6:0}, global={7:0}, state=1, x={7:0}] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L724] CALL parse_input("c1") VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={4:0}, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={4:0}, input={4:0}, state=1] [L724] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L725] CALL parse_input("c2") VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={1:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)=0, \old(global)=7, \old(state)=1, commands={6:0}, commands[i].name={2:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={5:0}, input={5:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)=7, \old(global)=0, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={5:0}, input={5:0}, state=1] [L725] RET parse_input("c2") VAL [commands={6:0}, global={7:0}, state=1] [L726] return 0; VAL [\result=0, commands={6:0}, global={7:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 67 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 94.3s, OverallIterations: 44, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 33.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13494 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13488 mSDsluCounter, 10385 SdHoareTripleChecker+Invalid, 9.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2942 IncrementalHoareTripleChecker+Unchecked, 8360 mSDsCounter, 1453 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11563 IncrementalHoareTripleChecker+Invalid, 15958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1453 mSolverCounterUnsat, 2025 mSDtfsCounter, 11563 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2823 GetRequests, 1775 SyntacticMatches, 56 SemanticMatches, 992 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 10487 ImplicationChecksByTransitivity, 47.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=21, InterpolantAutomatonStates: 655, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 43 MinimizatonAttempts, 2157 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 49.2s InterpolantComputationTime, 2952 NumberOfCodeBlocks, 2952 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 3156 ConstructedInterpolants, 270 QuantifiedInterpolants, 37635 SizeOfPredicates, 149 NumberOfNonLiveVariables, 8397 ConjunctsInSsa, 679 ConjunctsInUnsatCore, 84 InterpolantComputations, 15 PerfectInterpolantSequences, 813/1826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 09:30:27,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- 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 09:30:30,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:30,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:30,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:30,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:30,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:30,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:30,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:30,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:30,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:30,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:30,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:30,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:30,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:30,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:30,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:30,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:30,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:30,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:30,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:30,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:30,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:30,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:30,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:30,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:30,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:30,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:30,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:30,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:30,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:30,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:30,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:30,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:30,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:30,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:30,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:30,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:30,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:30,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:30,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:30,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:30,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2022-11-20 09:30:30,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:30,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:30,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:30,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:30,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:30,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:30,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:30,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:30,361 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:30,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:30,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:30:30,363 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:30:30,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:30:30,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:30:30,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:30,364 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:30:30,364 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:30:30,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:30,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:30:30,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:30:30,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:30:30,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:30:30,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:30,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:30,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:30,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:30,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:30,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:30,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:30,368 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:30:30,368 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:30:30,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:30:30,369 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_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2022-11-20 09:30:30,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:30:30,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:30:30,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:30:30,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:30:30,791 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:30:30,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2022-11-20 09:30:34,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:30:34,425 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:30:34,425 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2022-11-20 09:30:34,436 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/52bc400f2/82089a52388a414c8a9d85dddc90bd70/FLAG7322f3d53 [2022-11-20 09:30:34,455 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/data/52bc400f2/82089a52388a414c8a9d85dddc90bd70 [2022-11-20 09:30:34,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:30:34,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:30:34,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:34,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:30:34,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:30:34,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:34" (1/1) ... [2022-11-20 09:30:34,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e38f0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:34, skipping insertion in model container [2022-11-20 09:30:34,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:34" (1/1) ... [2022-11-20 09:30:34,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:30:34,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:34,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:34,918 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:30:34,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:35,031 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:30:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35 WrapperNode [2022-11-20 09:30:35,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:35,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:35,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:30:35,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:30:35,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,081 INFO L138 Inliner]: procedures = 169, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2022-11-20 09:30:35,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:35,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:30:35,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:30:35,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:30:35,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:30:35,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:30:35,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:30:35,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:30:35,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (1/1) ... [2022-11-20 09:30:35,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:35,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:30:35,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:30:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 09:30:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2022-11-20 09:30:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2022-11-20 09:30:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:30:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:30:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:30:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:30:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:30:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:30:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:30:35,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:30:35,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:30:35,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:30:35,731 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:30:35,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:30:35,738 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:30:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:35 BoogieIcfgContainer [2022-11-20 09:30:35,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:30:35,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:30:35,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:30:35,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:30:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:30:34" (1/3) ... [2022-11-20 09:30:35,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eea4bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:35, skipping insertion in model container [2022-11-20 09:30:35,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:35" (2/3) ... [2022-11-20 09:30:35,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eea4bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:35, skipping insertion in model container [2022-11-20 09:30:35,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:35" (3/3) ... [2022-11-20 09:30:35,750 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2022-11-20 09:30:35,769 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:30:35,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-11-20 09:30:35,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:30:35,821 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;@5d6bdb71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:30:35,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 09:30:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 39 states have (on average 1.794871794871795) internal successors, (70), 62 states have internal predecessors, (70), 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 09:30:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:30:35,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:35,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:30:35,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -594954629, now seen corresponding path program 1 times [2022-11-20 09:30:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:35,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593792267] [2022-11-20 09:30:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:35,855 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 09:30:35,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:35,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:35,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:30:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:36,113 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 09:30:36,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:36,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:36,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593792267] [2022-11-20 09:30:36,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593792267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:36,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:36,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421876876] [2022-11-20 09:30:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:36,157 INFO L87 Difference]: Start difference. First operand has 67 states, 39 states have (on average 1.794871794871795) internal successors, (70), 62 states have internal predecessors, (70), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 09:30:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:36,334 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2022-11-20 09:30:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 09:30:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:36,347 INFO L225 Difference]: With dead ends: 121 [2022-11-20 09:30:36,347 INFO L226 Difference]: Without dead ends: 117 [2022-11-20 09:30:36,349 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 09:30:36,352 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 56 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:36,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 109 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:30:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-20 09:30:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2022-11-20 09:30:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.7241379310344827) internal successors, (100), 80 states have internal predecessors, (100), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-20 09:30:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2022-11-20 09:30:36,398 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 6 [2022-11-20 09:30:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:36,399 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2022-11-20 09:30:36,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 09:30:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2022-11-20 09:30:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:30:36,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:36,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:30:36,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:36,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:36,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -594954628, now seen corresponding path program 1 times [2022-11-20 09:30:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:36,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132905872] [2022-11-20 09:30:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:36,615 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 09:30:36,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:36,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:36,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:30:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:36,782 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 09:30:36,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:36,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:36,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132905872] [2022-11-20 09:30:36,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132905872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:36,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:36,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27372753] [2022-11-20 09:30:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:36,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:36,794 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 09:30:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:37,076 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2022-11-20 09:30:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:30:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 09:30:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:37,079 INFO L225 Difference]: With dead ends: 214 [2022-11-20 09:30:37,079 INFO L226 Difference]: Without dead ends: 214 [2022-11-20 09:30:37,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:30:37,081 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 144 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:37,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 158 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:30:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-20 09:30:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 156. [2022-11-20 09:30:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 120 states have (on average 1.7666666666666666) internal successors, (212), 142 states have internal predecessors, (212), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:30:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 243 transitions. [2022-11-20 09:30:37,115 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 243 transitions. Word has length 6 [2022-11-20 09:30:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:37,126 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 243 transitions. [2022-11-20 09:30:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 09:30:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 243 transitions. [2022-11-20 09:30:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 09:30:37,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:37,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:37,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:37,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:37,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1263724334, now seen corresponding path program 1 times [2022-11-20 09:30:37,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:37,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292572711] [2022-11-20 09:30:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:37,349 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 09:30:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:37,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:37,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:37,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:30:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:37,597 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 09:30:37,611 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 09:30:37,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:37,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292572711] [2022-11-20 09:30:37,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292572711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:37,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:37,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324477236] [2022-11-20 09:30:37,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:37,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:30:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:30:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:37,615 INFO L87 Difference]: Start difference. First operand 156 states and 243 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:30:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:37,938 INFO L93 Difference]: Finished difference Result 247 states and 351 transitions. [2022-11-20 09:30:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:30:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:30:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:37,942 INFO L225 Difference]: With dead ends: 247 [2022-11-20 09:30:37,942 INFO L226 Difference]: Without dead ends: 247 [2022-11-20 09:30:37,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:30:37,943 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 109 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:37,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 191 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:30:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-20 09:30:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 159. [2022-11-20 09:30:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 123 states have (on average 1.7479674796747968) internal successors, (215), 145 states have internal predecessors, (215), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:30:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 246 transitions. [2022-11-20 09:30:37,970 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 246 transitions. Word has length 7 [2022-11-20 09:30:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:37,976 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 246 transitions. [2022-11-20 09:30:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 09:30:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 246 transitions. [2022-11-20 09:30:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:30:37,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:37,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:37,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Ended with exit code 0 [2022-11-20 09:30:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:38,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash -520748645, now seen corresponding path program 1 times [2022-11-20 09:30:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:38,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508849360] [2022-11-20 09:30:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:38,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:38,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:38,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:38,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:38,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:30:38,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:38,440 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 09:30:38,450 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 09:30:38,477 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 09:30:38,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:38,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:38,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508849360] [2022-11-20 09:30:38,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508849360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:38,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:38,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534147412] [2022-11-20 09:30:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:38,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:30:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:30:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:38,488 INFO L87 Difference]: Start difference. First operand 159 states and 246 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 09:30:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:38,759 INFO L93 Difference]: Finished difference Result 216 states and 282 transitions. [2022-11-20 09:30:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:30:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2022-11-20 09:30:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:38,761 INFO L225 Difference]: With dead ends: 216 [2022-11-20 09:30:38,761 INFO L226 Difference]: Without dead ends: 216 [2022-11-20 09:30:38,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:30:38,762 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 147 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:38,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 210 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:30:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-20 09:30:38,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 159. [2022-11-20 09:30:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 145 states have internal predecessors, (213), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:30:38,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 244 transitions. [2022-11-20 09:30:38,792 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 244 transitions. Word has length 8 [2022-11-20 09:30:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:38,792 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 244 transitions. [2022-11-20 09:30:38,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 09:30:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 244 transitions. [2022-11-20 09:30:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:30:38,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:38,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:38,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1036661236, now seen corresponding path program 1 times [2022-11-20 09:30:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:39,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108255229] [2022-11-20 09:30:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:39,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:39,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:39,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:39,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:30:39,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:39,148 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 09:30:39,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:39,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108255229] [2022-11-20 09:30:39,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108255229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:39,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:39,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77095510] [2022-11-20 09:30:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:30:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:30:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:39,153 INFO L87 Difference]: Start difference. First operand 159 states and 244 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:30:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:39,336 INFO L93 Difference]: Finished difference Result 253 states and 346 transitions. [2022-11-20 09:30:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:30:39,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2022-11-20 09:30:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:39,338 INFO L225 Difference]: With dead ends: 253 [2022-11-20 09:30:39,338 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 09:30:39,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 09:30:39,339 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 147 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:39,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 209 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:30:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 09:30:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 192. [2022-11-20 09:30:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 177 states have internal predecessors, (259), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:30:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 290 transitions. [2022-11-20 09:30:39,354 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 290 transitions. Word has length 9 [2022-11-20 09:30:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:39,355 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 290 transitions. [2022-11-20 09:30:39,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:30:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 290 transitions. [2022-11-20 09:30:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 09:30:39,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:39,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:39,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2071727293, now seen corresponding path program 1 times [2022-11-20 09:30:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997232691] [2022-11-20 09:30:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:39,568 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 09:30:39,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:39,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:39,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:30:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:39,733 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 09:30:39,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:39,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:39,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997232691] [2022-11-20 09:30:39,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997232691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:39,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:39,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:39,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907375583] [2022-11-20 09:30:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:39,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:30:39,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:30:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:30:39,736 INFO L87 Difference]: Start difference. First operand 192 states and 290 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:30:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:39,936 INFO L93 Difference]: Finished difference Result 242 states and 313 transitions. [2022-11-20 09:30:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:30:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2022-11-20 09:30:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:39,938 INFO L225 Difference]: With dead ends: 242 [2022-11-20 09:30:39,939 INFO L226 Difference]: Without dead ends: 242 [2022-11-20 09:30:39,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 09:30:39,940 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 186 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:39,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 207 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:30:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-20 09:30:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 206. [2022-11-20 09:30:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 167 states have (on average 1.6766467065868262) internal successors, (280), 191 states have internal predecessors, (280), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:30:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 311 transitions. [2022-11-20 09:30:39,953 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 311 transitions. Word has length 10 [2022-11-20 09:30:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:39,954 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 311 transitions. [2022-11-20 09:30:39,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 09:30:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 311 transitions. [2022-11-20 09:30:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:30:39,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:39,955 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:39,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:40,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:40,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 288674115, now seen corresponding path program 1 times [2022-11-20 09:30:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295491780] [2022-11-20 09:30:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:40,168 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 09:30:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:40,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:40,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:40,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:30:40,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:40,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:40,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:40,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295491780] [2022-11-20 09:30:40,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295491780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:40,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:40,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 09:30:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021815689] [2022-11-20 09:30:40,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:30:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:30:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:30:40,766 INFO L87 Difference]: Start difference. First operand 206 states and 311 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:41,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:41,378 INFO L93 Difference]: Finished difference Result 368 states and 497 transitions. [2022-11-20 09:30:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:30:41,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 09:30:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:41,386 INFO L225 Difference]: With dead ends: 368 [2022-11-20 09:30:41,386 INFO L226 Difference]: Without dead ends: 368 [2022-11-20 09:30:41,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:30:41,387 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 450 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:41,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 286 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:30:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-20 09:30:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 241. [2022-11-20 09:30:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 200 states have (on average 1.655) internal successors, (331), 226 states have internal predecessors, (331), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-11-20 09:30:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 368 transitions. [2022-11-20 09:30:41,408 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 368 transitions. Word has length 14 [2022-11-20 09:30:41,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:41,408 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 368 transitions. [2022-11-20 09:30:41,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 368 transitions. [2022-11-20 09:30:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 09:30:41,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:41,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:41,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:41,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:41,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash 358962923, now seen corresponding path program 1 times [2022-11-20 09:30:41,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:41,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335941780] [2022-11-20 09:30:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:41,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:41,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:41,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:41,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:30:41,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:41,942 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 09:30:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:41,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:42,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:42,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335941780] [2022-11-20 09:30:42,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335941780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:42,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:42,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 09:30:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315392059] [2022-11-20 09:30:42,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:42,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:30:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:30:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:30:42,129 INFO L87 Difference]: Start difference. First operand 241 states and 368 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:42,790 INFO L93 Difference]: Finished difference Result 418 states and 596 transitions. [2022-11-20 09:30:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:30:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 09:30:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:42,792 INFO L225 Difference]: With dead ends: 418 [2022-11-20 09:30:42,793 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 09:30:42,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:30:42,793 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 244 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:42,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 449 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:30:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 09:30:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 251. [2022-11-20 09:30:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 210 states have (on average 1.6476190476190475) internal successors, (346), 236 states have internal predecessors, (346), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-11-20 09:30:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 383 transitions. [2022-11-20 09:30:42,812 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 383 transitions. Word has length 15 [2022-11-20 09:30:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:42,813 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 383 transitions. [2022-11-20 09:30:42,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 383 transitions. [2022-11-20 09:30:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:30:42,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:42,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:42,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:43,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:43,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1757051230, now seen corresponding path program 1 times [2022-11-20 09:30:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554607628] [2022-11-20 09:30:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:43,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:30:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:43,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:43,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:43,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:30:43,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:43,430 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 09:30:43,437 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 09:30:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:43,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:43,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554607628] [2022-11-20 09:30:43,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554607628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:43,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:43,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 09:30:43,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905529223] [2022-11-20 09:30:43,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:43,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:30:43,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:30:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:30:43,693 INFO L87 Difference]: Start difference. First operand 251 states and 383 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:45,200 INFO L93 Difference]: Finished difference Result 634 states and 850 transitions. [2022-11-20 09:30:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:30:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:30:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:45,204 INFO L225 Difference]: With dead ends: 634 [2022-11-20 09:30:45,205 INFO L226 Difference]: Without dead ends: 634 [2022-11-20 09:30:45,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:30:45,206 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 612 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:45,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 633 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:30:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-20 09:30:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 349. [2022-11-20 09:30:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 302 states have (on average 1.6655629139072847) internal successors, (503), 330 states have internal predecessors, (503), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 09:30:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 553 transitions. [2022-11-20 09:30:45,229 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 553 transitions. Word has length 16 [2022-11-20 09:30:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:45,229 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 553 transitions. [2022-11-20 09:30:45,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 553 transitions. [2022-11-20 09:30:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:30:45,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:45,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:45,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1592986564, now seen corresponding path program 1 times [2022-11-20 09:30:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:45,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887320117] [2022-11-20 09:30:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:45,449 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 09:30:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:45,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:45,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:30:45,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:45,567 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 09:30:45,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:45,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887320117] [2022-11-20 09:30:45,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887320117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:45,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:45,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637832685] [2022-11-20 09:30:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:45,570 INFO L87 Difference]: Start difference. First operand 349 states and 553 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 09:30:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:45,605 INFO L93 Difference]: Finished difference Result 493 states and 776 transitions. [2022-11-20 09:30:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:45,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 18 [2022-11-20 09:30:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:45,609 INFO L225 Difference]: With dead ends: 493 [2022-11-20 09:30:45,609 INFO L226 Difference]: Without dead ends: 493 [2022-11-20 09:30:45,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 09:30:45,611 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 54 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:45,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 118 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-20 09:30:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 477. [2022-11-20 09:30:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 420 states have (on average 1.6547619047619047) internal successors, (695), 451 states have internal predecessors, (695), 15 states have call successors, (15), 10 states have call predecessors, (15), 19 states have return successors, (64), 15 states have call predecessors, (64), 15 states have call successors, (64) [2022-11-20 09:30:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 774 transitions. [2022-11-20 09:30:45,641 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 774 transitions. Word has length 18 [2022-11-20 09:30:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 774 transitions. [2022-11-20 09:30:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 09:30:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 774 transitions. [2022-11-20 09:30:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:30:45,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:45,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:45,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:45,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1592986820, now seen corresponding path program 1 times [2022-11-20 09:30:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388564835] [2022-11-20 09:30:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:45,863 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 09:30:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:45,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:45,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Waiting until timeout for monitored process [2022-11-20 09:30:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:45,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:30:45,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:46,057 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 09:30:46,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:46,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388564835] [2022-11-20 09:30:46,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388564835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:46,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:46,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943690486] [2022-11-20 09:30:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:46,061 INFO L87 Difference]: Start difference. First operand 477 states and 774 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 09:30:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:46,118 INFO L93 Difference]: Finished difference Result 523 states and 806 transitions. [2022-11-20 09:30:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 18 [2022-11-20 09:30:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:46,122 INFO L225 Difference]: With dead ends: 523 [2022-11-20 09:30:46,122 INFO L226 Difference]: Without dead ends: 523 [2022-11-20 09:30:46,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 09:30:46,124 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 34 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:46,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-20 09:30:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 506. [2022-11-20 09:30:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 446 states have (on average 1.6322869955156951) internal successors, (728), 479 states have internal predecessors, (728), 15 states have call successors, (15), 11 states have call predecessors, (15), 22 states have return successors, (58), 15 states have call predecessors, (58), 15 states have call successors, (58) [2022-11-20 09:30:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 801 transitions. [2022-11-20 09:30:46,143 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 801 transitions. Word has length 18 [2022-11-20 09:30:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:46,144 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 801 transitions. [2022-11-20 09:30:46,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 09:30:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 801 transitions. [2022-11-20 09:30:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 09:30:46,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:46,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:46,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2137943300, now seen corresponding path program 1 times [2022-11-20 09:30:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:46,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270689987] [2022-11-20 09:30:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,358 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 09:30:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:46,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:46,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:30:46,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:46,527 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 09:30:46,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:46,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:46,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270689987] [2022-11-20 09:30:46,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270689987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:46,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:46,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:30:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98485187] [2022-11-20 09:30:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:46,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:46,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:46,530 INFO L87 Difference]: Start difference. First operand 506 states and 801 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:30:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:46,585 INFO L93 Difference]: Finished difference Result 521 states and 801 transitions. [2022-11-20 09:30:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19 [2022-11-20 09:30:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:46,588 INFO L225 Difference]: With dead ends: 521 [2022-11-20 09:30:46,588 INFO L226 Difference]: Without dead ends: 521 [2022-11-20 09:30:46,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 09:30:46,589 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 31 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:46,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 121 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-20 09:30:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 506. [2022-11-20 09:30:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 446 states have (on average 1.6233183856502242) internal successors, (724), 479 states have internal predecessors, (724), 15 states have call successors, (15), 11 states have call predecessors, (15), 22 states have return successors, (58), 15 states have call predecessors, (58), 15 states have call successors, (58) [2022-11-20 09:30:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 797 transitions. [2022-11-20 09:30:46,621 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 797 transitions. Word has length 19 [2022-11-20 09:30:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:46,621 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 797 transitions. [2022-11-20 09:30:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 09:30:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 797 transitions. [2022-11-20 09:30:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:30:46,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:46,622 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 09:30:46,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1621609206, now seen corresponding path program 2 times [2022-11-20 09:30:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374247172] [2022-11-20 09:30:46,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:46,824 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 09:30:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:46,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:46,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:30:46,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:46,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:30:46,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:47,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:48,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374247172] [2022-11-20 09:30:48,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374247172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:48,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:48,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 09:30:48,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200477665] [2022-11-20 09:30:48,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:48,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:30:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:30:48,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:30:48,012 INFO L87 Difference]: Start difference. First operand 506 states and 797 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:50,265 INFO L93 Difference]: Finished difference Result 838 states and 1226 transitions. [2022-11-20 09:30:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:30:50,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 09:30:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:50,271 INFO L225 Difference]: With dead ends: 838 [2022-11-20 09:30:50,271 INFO L226 Difference]: Without dead ends: 838 [2022-11-20 09:30:50,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:30:50,272 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 304 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:50,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 604 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 09:30:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-11-20 09:30:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 556. [2022-11-20 09:30:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 493 states have (on average 1.6470588235294117) internal successors, (812), 529 states have internal predecessors, (812), 15 states have call successors, (15), 11 states have call predecessors, (15), 25 states have return successors, (55), 15 states have call predecessors, (55), 15 states have call successors, (55) [2022-11-20 09:30:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 882 transitions. [2022-11-20 09:30:50,298 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 882 transitions. Word has length 22 [2022-11-20 09:30:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:50,298 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 882 transitions. [2022-11-20 09:30:50,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 882 transitions. [2022-11-20 09:30:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 09:30:50,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:50,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:50,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1078444150, now seen corresponding path program 1 times [2022-11-20 09:30:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:50,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511724091] [2022-11-20 09:30:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:50,514 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 09:30:50,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:50,516 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (15)] Waiting until timeout for monitored process [2022-11-20 09:30:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:50,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:30:50,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:50,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:50,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:50,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511724091] [2022-11-20 09:30:50,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511724091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:50,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:50,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:30:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739521538] [2022-11-20 09:30:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:30:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:30:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:30:50,622 INFO L87 Difference]: Start difference. First operand 556 states and 882 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:30:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:50,631 INFO L93 Difference]: Finished difference Result 400 states and 619 transitions. [2022-11-20 09:30:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:30:50,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-20 09:30:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:50,634 INFO L225 Difference]: With dead ends: 400 [2022-11-20 09:30:50,634 INFO L226 Difference]: Without dead ends: 400 [2022-11-20 09:30:50,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 09:30:50,635 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:50,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 132 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:30:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-20 09:30:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-20 09:30:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 349 states have (on average 1.6389684813753582) internal successors, (572), 380 states have internal predecessors, (572), 11 states have call successors, (11), 8 states have call predecessors, (11), 17 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2022-11-20 09:30:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 619 transitions. [2022-11-20 09:30:50,650 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 619 transitions. Word has length 25 [2022-11-20 09:30:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:50,651 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 619 transitions. [2022-11-20 09:30:50,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:30:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 619 transitions. [2022-11-20 09:30:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:30:50,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:50,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:50,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:30:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1446375410, now seen corresponding path program 1 times [2022-11-20 09:30:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:30:50,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57898172] [2022-11-20 09:30:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:50,865 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 09:30:50,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:30:50,867 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:30:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:30:50,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:53,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:53,430 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 09:30:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:53,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:53,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:30:53,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57898172] [2022-11-20 09:30:53,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57898172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:53,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002896367] [2022-11-20 09:30:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:53,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:30:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:30:53,973 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:30:53,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-20 09:30:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:54,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:30:54,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:56,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:56,576 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 09:30:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:56,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:56,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1002896367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:56,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:30:56,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-11-20 09:30:56,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486870184] [2022-11-20 09:30:56,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:56,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:30:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:30:56,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:30:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=63, Unknown=3, NotChecked=0, Total=90 [2022-11-20 09:30:56,926 INFO L87 Difference]: Start difference. First operand 400 states and 619 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:01,577 INFO L93 Difference]: Finished difference Result 697 states and 1004 transitions. [2022-11-20 09:31:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:31:01,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-20 09:31:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:01,581 INFO L225 Difference]: With dead ends: 697 [2022-11-20 09:31:01,581 INFO L226 Difference]: Without dead ends: 697 [2022-11-20 09:31:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=74, Invalid=161, Unknown=5, NotChecked=0, Total=240 [2022-11-20 09:31:01,582 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 226 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:01,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 263 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 153 Invalid, 0 Unknown, 86 Unchecked, 0.4s Time] [2022-11-20 09:31:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-20 09:31:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 607. [2022-11-20 09:31:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 542 states have (on average 1.5904059040590406) internal successors, (862), 578 states have internal predecessors, (862), 16 states have call successors, (16), 12 states have call predecessors, (16), 26 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) [2022-11-20 09:31:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 937 transitions. [2022-11-20 09:31:01,598 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 937 transitions. Word has length 27 [2022-11-20 09:31:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:01,599 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 937 transitions. [2022-11-20 09:31:01,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 937 transitions. [2022-11-20 09:31:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:31:01,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:01,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:01,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:01,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,005 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 308487171, now seen corresponding path program 1 times [2022-11-20 09:31:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765325453] [2022-11-20 09:31:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:02,006 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 09:31:02,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:02,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:02,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:31:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:02,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:02,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:02,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765325453] [2022-11-20 09:31:02,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765325453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:02,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:02,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:31:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995619596] [2022-11-20 09:31:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:02,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:31:02,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:31:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:31:02,371 INFO L87 Difference]: Start difference. First operand 607 states and 937 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:02,671 INFO L93 Difference]: Finished difference Result 560 states and 812 transitions. [2022-11-20 09:31:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:31:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 09:31:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:02,674 INFO L225 Difference]: With dead ends: 560 [2022-11-20 09:31:02,674 INFO L226 Difference]: Without dead ends: 560 [2022-11-20 09:31:02,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:31:02,675 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 134 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:02,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 215 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-20 09:31:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 488. [2022-11-20 09:31:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 432 states have (on average 1.5648148148148149) internal successors, (676), 464 states have internal predecessors, (676), 13 states have call successors, (13), 10 states have call predecessors, (13), 20 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2022-11-20 09:31:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 732 transitions. [2022-11-20 09:31:02,696 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 732 transitions. Word has length 28 [2022-11-20 09:31:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:02,697 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 732 transitions. [2022-11-20 09:31:02,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 732 transitions. [2022-11-20 09:31:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:31:02,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:02,700 INFO L195 NwaCegarLoop]: trace histogram [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 09:31:02,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1602633389, now seen corresponding path program 1 times [2022-11-20 09:31:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:02,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960395315] [2022-11-20 09:31:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:02,912 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 09:31:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:02,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:02,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:31:03,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:05,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:05,608 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 09:31:05,784 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 09:31:05,789 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 09:31:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:05,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:08,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960395315] [2022-11-20 09:31:08,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960395315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310714397] [2022-11-20 09:31:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:31:08,226 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:31:08,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 09:31:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:31:08,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:13,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:13,075 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 09:31:13,163 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 09:31:13,172 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 09:31:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:13,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:15,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1310714397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:15,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:15,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2022-11-20 09:31:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887978987] [2022-11-20 09:31:15,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=119, Unknown=5, NotChecked=0, Total=156 [2022-11-20 09:31:15,457 INFO L87 Difference]: Start difference. First operand 488 states and 732 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:22,488 INFO L93 Difference]: Finished difference Result 567 states and 795 transitions. [2022-11-20 09:31:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:31:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-20 09:31:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:22,492 INFO L225 Difference]: With dead ends: 567 [2022-11-20 09:31:22,492 INFO L226 Difference]: Without dead ends: 567 [2022-11-20 09:31:22,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=113, Invalid=299, Unknown=8, NotChecked=0, Total=420 [2022-11-20 09:31:22,493 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 249 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:22,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 278 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 194 Invalid, 0 Unknown, 65 Unchecked, 0.6s Time] [2022-11-20 09:31:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-20 09:31:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 489. [2022-11-20 09:31:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 433 states have (on average 1.5588914549653579) internal successors, (675), 465 states have internal predecessors, (675), 13 states have call successors, (13), 10 states have call predecessors, (13), 20 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2022-11-20 09:31:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 731 transitions. [2022-11-20 09:31:22,517 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 731 transitions. Word has length 29 [2022-11-20 09:31:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:22,517 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 731 transitions. [2022-11-20 09:31:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 731 transitions. [2022-11-20 09:31:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:31:22,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:22,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:22,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:22,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:22,944 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1857972446, now seen corresponding path program 1 times [2022-11-20 09:31:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:22,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734834528] [2022-11-20 09:31:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:22,945 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 09:31:22,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:22,946 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:22,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:23,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:31:23,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:23,157 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)))) is different from true [2022-11-20 09:31:23,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:31:23,211 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 09:31:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:23,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:23,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:23,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734834528] [2022-11-20 09:31:23,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734834528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:23,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:23,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-11-20 09:31:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608891371] [2022-11-20 09:31:23,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:31:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:31:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2022-11-20 09:31:23,603 INFO L87 Difference]: Start difference. First operand 489 states and 731 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:31:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:24,203 INFO L93 Difference]: Finished difference Result 614 states and 857 transitions. [2022-11-20 09:31:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:31:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-11-20 09:31:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:24,207 INFO L225 Difference]: With dead ends: 614 [2022-11-20 09:31:24,207 INFO L226 Difference]: Without dead ends: 614 [2022-11-20 09:31:24,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=228, Unknown=6, NotChecked=34, Total=380 [2022-11-20 09:31:24,214 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 341 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:24,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 247 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 147 Invalid, 0 Unknown, 157 Unchecked, 0.3s Time] [2022-11-20 09:31:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-20 09:31:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 575. [2022-11-20 09:31:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 516 states have (on average 1.494186046511628) internal successors, (771), 549 states have internal predecessors, (771), 13 states have call successors, (13), 12 states have call predecessors, (13), 23 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2022-11-20 09:31:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 827 transitions. [2022-11-20 09:31:24,232 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 827 transitions. Word has length 30 [2022-11-20 09:31:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:24,232 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 827 transitions. [2022-11-20 09:31:24,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:31:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 827 transitions. [2022-11-20 09:31:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:31:24,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:24,233 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, 1, 1, 1, 1] [2022-11-20 09:31:24,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Ended with exit code 0 [2022-11-20 09:31:24,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:24,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1762570929, now seen corresponding path program 1 times [2022-11-20 09:31:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:24,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147991614] [2022-11-20 09:31:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:24,446 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 09:31:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:24,448 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:24,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:24,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:31:24,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:24,688 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)) (exists ((v_ArrVal_34 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_34) |c_#length|)))) is different from true [2022-11-20 09:31:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:24,761 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 09:31:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:24,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:25,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:25,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147991614] [2022-11-20 09:31:25,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147991614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:25,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023575322] [2022-11-20 09:31:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:25,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:31:25,107 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:31:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-20 09:31:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:25,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:31:25,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:25,454 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_40 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_40) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:31:25,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:25,521 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 09:31:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:25,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:25,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023575322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:25,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:25,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 09:31:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964024170] [2022-11-20 09:31:25,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:25,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=83, Unknown=2, NotChecked=38, Total=156 [2022-11-20 09:31:25,777 INFO L87 Difference]: Start difference. First operand 575 states and 827 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:31:26,541 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)) (exists ((v_ArrVal_34 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_34) |c_#length|)))) (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_40 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_40) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|))))) is different from true [2022-11-20 09:31:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:26,650 INFO L93 Difference]: Finished difference Result 750 states and 984 transitions. [2022-11-20 09:31:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:31:26,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-11-20 09:31:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:26,653 INFO L225 Difference]: With dead ends: 750 [2022-11-20 09:31:26,653 INFO L226 Difference]: Without dead ends: 750 [2022-11-20 09:31:26,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=263, Unknown=3, NotChecked=114, Total=506 [2022-11-20 09:31:26,654 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 285 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:26,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 260 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 187 Invalid, 0 Unknown, 372 Unchecked, 0.5s Time] [2022-11-20 09:31:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-20 09:31:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 681. [2022-11-20 09:31:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 618 states have (on average 1.4660194174757282) internal successors, (906), 654 states have internal predecessors, (906), 13 states have call successors, (13), 13 states have call predecessors, (13), 27 states have return successors, (37), 13 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-20 09:31:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 956 transitions. [2022-11-20 09:31:26,681 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 956 transitions. Word has length 31 [2022-11-20 09:31:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:26,682 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 956 transitions. [2022-11-20 09:31:26,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:31:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 956 transitions. [2022-11-20 09:31:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 09:31:26,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:26,683 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:26,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:26,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:27,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:27,101 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash -132941611, now seen corresponding path program 1 times [2022-11-20 09:31:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:27,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570857223] [2022-11-20 09:31:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:27,102 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 09:31:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:27,103 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:27,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:31:27,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:29,670 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 09:31:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:29,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:36,524 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:31:36,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:36,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570857223] [2022-11-20 09:31:36,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570857223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:36,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [630558435] [2022-11-20 09:31:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:36,526 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:36,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:31:36,527 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:31:36,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-20 09:31:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:36,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:31:36,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:39,096 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 09:31:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:39,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:39,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [630558435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:39,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:39,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-20 09:31:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586727802] [2022-11-20 09:31:39,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:39,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=96, Unknown=4, NotChecked=0, Total=132 [2022-11-20 09:31:39,680 INFO L87 Difference]: Start difference. First operand 681 states and 956 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:44,387 INFO L93 Difference]: Finished difference Result 840 states and 1113 transitions. [2022-11-20 09:31:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:31:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-20 09:31:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:44,391 INFO L225 Difference]: With dead ends: 840 [2022-11-20 09:31:44,391 INFO L226 Difference]: Without dead ends: 840 [2022-11-20 09:31:44,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=106, Invalid=268, Unknown=6, NotChecked=0, Total=380 [2022-11-20 09:31:44,392 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 387 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:44,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 295 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 160 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2022-11-20 09:31:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-20 09:31:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 693. [2022-11-20 09:31:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 630 states have (on average 1.4507936507936507) internal successors, (914), 666 states have internal predecessors, (914), 13 states have call successors, (13), 13 states have call predecessors, (13), 27 states have return successors, (35), 13 states have call predecessors, (35), 13 states have call successors, (35) [2022-11-20 09:31:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 962 transitions. [2022-11-20 09:31:44,411 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 962 transitions. Word has length 35 [2022-11-20 09:31:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:44,411 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 962 transitions. [2022-11-20 09:31:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 962 transitions. [2022-11-20 09:31:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:31:44,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:44,413 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:44,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:44,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:44,825 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1525473162, now seen corresponding path program 1 times [2022-11-20 09:31:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:44,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227759472] [2022-11-20 09:31:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:44,826 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 09:31:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:44,828 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:44,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:44,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:31:44,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:45,662 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 09:31:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:45,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:46,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:46,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227759472] [2022-11-20 09:31:46,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227759472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:46,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:46,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:31:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808895273] [2022-11-20 09:31:46,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:46,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:31:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:31:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:31:46,463 INFO L87 Difference]: Start difference. First operand 693 states and 962 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:31:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:47,766 INFO L93 Difference]: Finished difference Result 723 states and 976 transitions. [2022-11-20 09:31:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:31:47,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-20 09:31:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:47,770 INFO L225 Difference]: With dead ends: 723 [2022-11-20 09:31:47,770 INFO L226 Difference]: Without dead ends: 723 [2022-11-20 09:31:47,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:31:47,771 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 368 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:47,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 522 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:31:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-20 09:31:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 492. [2022-11-20 09:31:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 443 states have (on average 1.4853273137697518) internal successors, (658), 473 states have internal predecessors, (658), 9 states have call successors, (9), 9 states have call predecessors, (9), 17 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:31:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 689 transitions. [2022-11-20 09:31:47,786 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 689 transitions. Word has length 36 [2022-11-20 09:31:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:47,787 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 689 transitions. [2022-11-20 09:31:47,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:31:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 689 transitions. [2022-11-20 09:31:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 09:31:47,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:47,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:47,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Ended with exit code 0 [2022-11-20 09:31:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:47,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 634414932, now seen corresponding path program 1 times [2022-11-20 09:31:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:48,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875229897] [2022-11-20 09:31:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:48,000 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 09:31:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:48,002 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:48,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:48,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:31:48,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:48,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875229897] [2022-11-20 09:31:48,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875229897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:48,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:48,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-20 09:31:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649652308] [2022-11-20 09:31:48,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:48,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:48,320 INFO L87 Difference]: Start difference. First operand 492 states and 689 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:48,369 INFO L93 Difference]: Finished difference Result 499 states and 688 transitions. [2022-11-20 09:31:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:48,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-20 09:31:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:48,372 INFO L225 Difference]: With dead ends: 499 [2022-11-20 09:31:48,372 INFO L226 Difference]: Without dead ends: 499 [2022-11-20 09:31:48,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 09:31:48,373 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 57 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:48,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 116 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:31:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-20 09:31:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 488. [2022-11-20 09:31:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 442 states have (on average 1.4615384615384615) internal successors, (646), 469 states have internal predecessors, (646), 9 states have call successors, (9), 9 states have call predecessors, (9), 17 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-11-20 09:31:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 677 transitions. [2022-11-20 09:31:48,385 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 677 transitions. Word has length 40 [2022-11-20 09:31:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:48,386 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 677 transitions. [2022-11-20 09:31:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 677 transitions. [2022-11-20 09:31:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 09:31:48,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:48,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:48,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:48,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:48,608 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:48,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1807973484, now seen corresponding path program 1 times [2022-11-20 09:31:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:48,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738169902] [2022-11-20 09:31:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:48,609 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 09:31:48,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:48,611 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:48,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (28)] Waiting until timeout for monitored process [2022-11-20 09:31:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:48,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:48,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:49,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:49,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738169902] [2022-11-20 09:31:49,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738169902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:49,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:49,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 09:31:49,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790921531] [2022-11-20 09:31:49,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:49,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:31:49,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:31:49,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:31:49,189 INFO L87 Difference]: Start difference. First operand 488 states and 677 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:31:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:49,442 INFO L93 Difference]: Finished difference Result 441 states and 585 transitions. [2022-11-20 09:31:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:31:49,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-20 09:31:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:49,445 INFO L225 Difference]: With dead ends: 441 [2022-11-20 09:31:49,445 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 09:31:49,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:31:49,446 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 82 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:49,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 202 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 09:31:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 421. [2022-11-20 09:31:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 383 states have (on average 1.422976501305483) internal successors, (545), 404 states have internal predecessors, (545), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:31:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 568 transitions. [2022-11-20 09:31:49,456 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 568 transitions. Word has length 41 [2022-11-20 09:31:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:49,457 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 568 transitions. [2022-11-20 09:31:49,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:31:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 568 transitions. [2022-11-20 09:31:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 09:31:49,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:49,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:49,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (28)] Ended with exit code 0 [2022-11-20 09:31:49,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:49,670 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash -212603050, now seen corresponding path program 1 times [2022-11-20 09:31:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:49,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511062129] [2022-11-20 09:31:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:49,671 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 09:31:49,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:49,672 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:49,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (29)] Waiting until timeout for monitored process [2022-11-20 09:31:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:49,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:31:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:49,839 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 09:31:49,956 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:31:49,957 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 09:31:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:49,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:50,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511062129] [2022-11-20 09:31:50,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511062129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:50,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:50,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-20 09:31:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101110475] [2022-11-20 09:31:50,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:50,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:50,128 INFO L87 Difference]: Start difference. First operand 421 states and 568 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:50,334 INFO L93 Difference]: Finished difference Result 447 states and 578 transitions. [2022-11-20 09:31:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-11-20 09:31:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:50,337 INFO L225 Difference]: With dead ends: 447 [2022-11-20 09:31:50,337 INFO L226 Difference]: Without dead ends: 447 [2022-11-20 09:31:50,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:31:50,338 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 37 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:50,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 148 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-20 09:31:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 428. [2022-11-20 09:31:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 390 states have (on average 1.4025641025641025) internal successors, (547), 411 states have internal predecessors, (547), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:31:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 570 transitions. [2022-11-20 09:31:50,348 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 570 transitions. Word has length 42 [2022-11-20 09:31:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 570 transitions. [2022-11-20 09:31:50,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 570 transitions. [2022-11-20 09:31:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 09:31:50,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:50,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:50,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (29)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:50,564 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2034116786, now seen corresponding path program 1 times [2022-11-20 09:31:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:50,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279311594] [2022-11-20 09:31:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:50,567 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 09:31:50,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:50,568 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:50,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (30)] Waiting until timeout for monitored process [2022-11-20 09:31:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:50,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:31:50,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:50,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:31:50,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:50,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279311594] [2022-11-20 09:31:50,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279311594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:50,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:50,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:31:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627231143] [2022-11-20 09:31:50,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:50,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:50,897 INFO L87 Difference]: Start difference. First operand 428 states and 570 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:51,063 INFO L93 Difference]: Finished difference Result 426 states and 510 transitions. [2022-11-20 09:31:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:51,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-20 09:31:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:51,066 INFO L225 Difference]: With dead ends: 426 [2022-11-20 09:31:51,066 INFO L226 Difference]: Without dead ends: 426 [2022-11-20 09:31:51,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:51,067 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 80 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:51,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 338 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-20 09:31:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 371. [2022-11-20 09:31:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 333 states have (on average 1.3183183183183182) internal successors, (439), 354 states have internal predecessors, (439), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:31:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 462 transitions. [2022-11-20 09:31:51,082 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 462 transitions. Word has length 44 [2022-11-20 09:31:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:51,082 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 462 transitions. [2022-11-20 09:31:51,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 462 transitions. [2022-11-20 09:31:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 09:31:51,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:51,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:51,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (30)] Ended with exit code 0 [2022-11-20 09:31:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:51,296 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1418260067, now seen corresponding path program 1 times [2022-11-20 09:31:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:51,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291421551] [2022-11-20 09:31:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:51,297 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 09:31:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:51,298 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:51,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (31)] Waiting until timeout for monitored process [2022-11-20 09:31:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:51,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:51,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 09:31:51,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:51,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:51,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291421551] [2022-11-20 09:31:51,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291421551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:51,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:51,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772575091] [2022-11-20 09:31:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:51,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:51,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:31:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:51,414 INFO L87 Difference]: Start difference. First operand 371 states and 462 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:51,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:51,419 INFO L93 Difference]: Finished difference Result 346 states and 416 transitions. [2022-11-20 09:31:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-11-20 09:31:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:51,421 INFO L225 Difference]: With dead ends: 346 [2022-11-20 09:31:51,421 INFO L226 Difference]: Without dead ends: 346 [2022-11-20 09:31:51,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 09:31:51,422 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:51,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:31:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-20 09:31:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 337. [2022-11-20 09:31:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 303 states have (on average 1.2673267326732673) internal successors, (384), 320 states have internal predecessors, (384), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 09:31:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 407 transitions. [2022-11-20 09:31:51,433 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 407 transitions. Word has length 47 [2022-11-20 09:31:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:51,433 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 407 transitions. [2022-11-20 09:31:51,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:31:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 407 transitions. [2022-11-20 09:31:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 09:31:51,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:51,434 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:51,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (31)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:51,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:51,653 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:31:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash -377504153, now seen corresponding path program 1 times [2022-11-20 09:31:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:31:51,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361083306] [2022-11-20 09:31:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:51,654 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 09:31:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:31:51,655 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:31:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (32)] Waiting until timeout for monitored process [2022-11-20 09:31:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:51,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:31:51,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:54,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:54,514 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 09:31:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:31:54,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:57,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:31:57,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361083306] [2022-11-20 09:31:57,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361083306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:57,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1094721587] [2022-11-20 09:31:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:31:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:31:57,059 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:31:57,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-20 09:31:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:57,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:31:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:00,072 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 09:32:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:32:00,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:00,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1094721587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:00,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:00,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-20 09:32:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733381177] [2022-11-20 09:32:00,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=76, Unknown=4, NotChecked=0, Total=110 [2022-11-20 09:32:00,398 INFO L87 Difference]: Start difference. First operand 337 states and 407 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:32:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:11,225 INFO L93 Difference]: Finished difference Result 375 states and 428 transitions. [2022-11-20 09:32:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:32:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-11-20 09:32:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:11,227 INFO L225 Difference]: With dead ends: 375 [2022-11-20 09:32:11,227 INFO L226 Difference]: Without dead ends: 375 [2022-11-20 09:32:11,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=135, Invalid=315, Unknown=12, NotChecked=0, Total=462 [2022-11-20 09:32:11,228 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 292 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:11,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 210 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 126 Invalid, 0 Unknown, 74 Unchecked, 0.4s Time] [2022-11-20 09:32:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-20 09:32:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 339. [2022-11-20 09:32:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 305 states have (on average 1.2557377049180327) internal successors, (383), 322 states have internal predecessors, (383), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:32:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 405 transitions. [2022-11-20 09:32:11,236 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 405 transitions. Word has length 48 [2022-11-20 09:32:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:11,237 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 405 transitions. [2022-11-20 09:32:11,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:32:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 405 transitions. [2022-11-20 09:32:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:32:11,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:11,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:11,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:11,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (32)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:11,649 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:32:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2004239674, now seen corresponding path program 1 times [2022-11-20 09:32:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:11,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785683671] [2022-11-20 09:32:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:11,650 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 09:32:11,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:11,652 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:11,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (34)] Waiting until timeout for monitored process [2022-11-20 09:32:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:11,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:32:11,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:16,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:16,928 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 09:32:17,072 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 09:32:17,077 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 09:32:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 09:32:17,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:19,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785683671] [2022-11-20 09:32:19,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785683671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175027642] [2022-11-20 09:32:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:32:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:32:19,538 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:32:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-20 09:32:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:19,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:32:19,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:24,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:24,874 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 09:32:24,956 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 09:32:24,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:32:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 09:32:24,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1175027642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:27,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:27,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-11-20 09:32:27,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322002403] [2022-11-20 09:32:27,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:27,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=119, Unknown=5, NotChecked=0, Total=156 [2022-11-20 09:32:27,229 INFO L87 Difference]: Start difference. First operand 339 states and 405 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:32:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:34,172 INFO L93 Difference]: Finished difference Result 363 states and 420 transitions. [2022-11-20 09:32:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:32:34,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-20 09:32:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:34,174 INFO L225 Difference]: With dead ends: 363 [2022-11-20 09:32:34,174 INFO L226 Difference]: Without dead ends: 363 [2022-11-20 09:32:34,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=113, Invalid=299, Unknown=8, NotChecked=0, Total=420 [2022-11-20 09:32:34,175 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 163 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:34,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 285 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 54 Unchecked, 0.5s Time] [2022-11-20 09:32:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-20 09:32:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 339. [2022-11-20 09:32:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 305 states have (on average 1.2524590163934426) internal successors, (382), 322 states have internal predecessors, (382), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:32:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 404 transitions. [2022-11-20 09:32:34,182 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 404 transitions. Word has length 50 [2022-11-20 09:32:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:34,182 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 404 transitions. [2022-11-20 09:32:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:32:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 404 transitions. [2022-11-20 09:32:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:32:34,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:34,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:34,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (34)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:34,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:34,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:32:34,597 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:32:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2111001345, now seen corresponding path program 1 times [2022-11-20 09:32:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:34,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46576923] [2022-11-20 09:32:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:34,598 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 09:32:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:34,599 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:34,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (36)] Waiting until timeout for monitored process [2022-11-20 09:32:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:32:34,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:34,975 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:32:34,975 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 09:32:37,593 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-20 09:32:37,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 09:32:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:37,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:37,793 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 09:32:37,794 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 66 treesize of output 63 [2022-11-20 09:32:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:42,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46576923] [2022-11-20 09:32:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46576923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:42,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:42,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2022-11-20 09:32:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761591134] [2022-11-20 09:32:42,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:42,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 09:32:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 09:32:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=303, Unknown=3, NotChecked=0, Total=380 [2022-11-20 09:32:42,947 INFO L87 Difference]: Start difference. First operand 339 states and 404 transitions. Second operand has 20 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:32:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:45,763 INFO L93 Difference]: Finished difference Result 370 states and 422 transitions. [2022-11-20 09:32:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:32:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2022-11-20 09:32:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:45,764 INFO L225 Difference]: With dead ends: 370 [2022-11-20 09:32:45,765 INFO L226 Difference]: Without dead ends: 370 [2022-11-20 09:32:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=169, Invalid=529, Unknown=4, NotChecked=0, Total=702 [2022-11-20 09:32:45,765 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 387 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:45,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 214 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 163 Invalid, 0 Unknown, 147 Unchecked, 0.4s Time] [2022-11-20 09:32:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-20 09:32:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 336. [2022-11-20 09:32:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 305 states have (on average 1.2295081967213115) internal successors, (375), 319 states have internal predecessors, (375), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:32:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 397 transitions. [2022-11-20 09:32:45,773 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 397 transitions. Word has length 51 [2022-11-20 09:32:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 397 transitions. [2022-11-20 09:32:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:32:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 397 transitions. [2022-11-20 09:32:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:32:45,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:45,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:45,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (36)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:46,007 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:32:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2111001344, now seen corresponding path program 1 times [2022-11-20 09:32:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:46,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906391673] [2022-11-20 09:32:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:46,009 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 09:32:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:46,010 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (37)] Waiting until timeout for monitored process [2022-11-20 09:32:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:46,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:32:46,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:46,617 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:32:46,617 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 09:32:47,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:32:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:47,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:47,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:32:47,626 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 22 treesize of output 18 [2022-11-20 09:32:50,238 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 09:32:50,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-20 09:32:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:50,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906391673] [2022-11-20 09:32:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906391673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:50,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-11-20 09:32:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472370127] [2022-11-20 09:32:50,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=170, Unknown=1, NotChecked=0, Total=240 [2022-11-20 09:32:50,835 INFO L87 Difference]: Start difference. First operand 336 states and 397 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:32:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:58,668 INFO L93 Difference]: Finished difference Result 441 states and 502 transitions. [2022-11-20 09:32:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:32:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-20 09:32:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:58,671 INFO L225 Difference]: With dead ends: 441 [2022-11-20 09:32:58,671 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 09:32:58,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=215, Invalid=434, Unknown=1, NotChecked=0, Total=650 [2022-11-20 09:32:58,672 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 335 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:58,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 181 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 158 Invalid, 0 Unknown, 119 Unchecked, 0.6s Time] [2022-11-20 09:32:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 09:32:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 335. [2022-11-20 09:32:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 304 states have (on average 1.2203947368421053) internal successors, (371), 318 states have internal predecessors, (371), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:32:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 393 transitions. [2022-11-20 09:32:58,680 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 393 transitions. Word has length 51 [2022-11-20 09:32:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:58,680 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 393 transitions. [2022-11-20 09:32:58,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:32:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 393 transitions. [2022-11-20 09:32:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 09:32:58,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:58,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:58,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (37)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:58,895 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:32:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 410026143, now seen corresponding path program 1 times [2022-11-20 09:32:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:32:58,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503814320] [2022-11-20 09:32:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:58,896 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 09:32:58,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:32:58,896 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:32:58,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (38)] Waiting until timeout for monitored process [2022-11-20 09:32:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:59,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:32:59,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:59,125 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_124 (_ BitVec 1))) (= (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| v_ArrVal_124) |c_#valid|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:32:59,217 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:32:59,218 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 09:32:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2022-11-20 09:32:59,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 09:32:59,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:32:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503814320] [2022-11-20 09:32:59,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503814320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:59,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:59,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-11-20 09:32:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452159541] [2022-11-20 09:32:59,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:59,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:32:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:32:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:32:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2022-11-20 09:32:59,846 INFO L87 Difference]: Start difference. First operand 335 states and 393 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 09:33:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:00,452 INFO L93 Difference]: Finished difference Result 354 states and 402 transitions. [2022-11-20 09:33:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:33:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-11-20 09:33:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:00,454 INFO L225 Difference]: With dead ends: 354 [2022-11-20 09:33:00,454 INFO L226 Difference]: Without dead ends: 354 [2022-11-20 09:33:00,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=265, Unknown=1, NotChecked=36, Total=420 [2022-11-20 09:33:00,455 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 203 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:00,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 210 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 153 Invalid, 0 Unknown, 92 Unchecked, 0.3s Time] [2022-11-20 09:33:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-20 09:33:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 335. [2022-11-20 09:33:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 304 states have (on average 1.2105263157894737) internal successors, (368), 318 states have internal predecessors, (368), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:33:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 390 transitions. [2022-11-20 09:33:00,463 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 390 transitions. Word has length 51 [2022-11-20 09:33:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:00,463 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 390 transitions. [2022-11-20 09:33:00,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 09:33:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 390 transitions. [2022-11-20 09:33:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:33:00,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:00,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:00,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (38)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:00,677 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:33:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1016532274, now seen corresponding path program 1 times [2022-11-20 09:33:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:00,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587656603] [2022-11-20 09:33:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:00,678 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 09:33:00,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:00,680 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:00,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (39)] Waiting until timeout for monitored process [2022-11-20 09:33:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:00,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:33:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:01,305 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:33:01,306 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 09:33:04,326 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-20 09:33:04,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 46 [2022-11-20 09:33:04,463 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 09:33:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:04,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:04,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:04,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587656603] [2022-11-20 09:33:04,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587656603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:04,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1815076439] [2022-11-20 09:33:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:04,963 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:33:04,963 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:33:04,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-20 09:33:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:05,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 09:33:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:05,831 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 09:33:05,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 09:33:08,730 INFO L321 Elim1Store]: treesize reduction 68, result has 38.2 percent of original size [2022-11-20 09:33:08,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 62 [2022-11-20 09:33:08,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:33:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:09,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:09,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1815076439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:09,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:09,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2022-11-20 09:33:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287089274] [2022-11-20 09:33:09,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:09,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 09:33:09,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 09:33:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2022-11-20 09:33:09,295 INFO L87 Difference]: Start difference. First operand 335 states and 390 transitions. Second operand has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:33:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:21,196 INFO L93 Difference]: Finished difference Result 373 states and 411 transitions. [2022-11-20 09:33:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:33:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2022-11-20 09:33:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:21,199 INFO L225 Difference]: With dead ends: 373 [2022-11-20 09:33:21,199 INFO L226 Difference]: Without dead ends: 373 [2022-11-20 09:33:21,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=232, Invalid=952, Unknown=6, NotChecked=0, Total=1190 [2022-11-20 09:33:21,200 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 429 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:21,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 387 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 306 Invalid, 0 Unknown, 229 Unchecked, 0.8s Time] [2022-11-20 09:33:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-20 09:33:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 335. [2022-11-20 09:33:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 304 states have (on average 1.2039473684210527) internal successors, (366), 318 states have internal predecessors, (366), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 09:33:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 388 transitions. [2022-11-20 09:33:21,207 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 388 transitions. Word has length 52 [2022-11-20 09:33:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:21,207 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 388 transitions. [2022-11-20 09:33:21,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:33:21,208 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 388 transitions. [2022-11-20 09:33:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:33:21,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:21,209 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:21,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:21,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (39)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:21,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:21,613 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:33:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -174091406, now seen corresponding path program 1 times [2022-11-20 09:33:21,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:21,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602814530] [2022-11-20 09:33:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:21,613 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 09:33:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:21,614 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:21,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (41)] Waiting until timeout for monitored process [2022-11-20 09:33:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:21,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:33:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:21,959 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_158 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_158))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:33:22,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:22,028 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 09:33:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2022-11-20 09:33:22,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:22,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:22,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602814530] [2022-11-20 09:33:22,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602814530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:22,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2147035165] [2022-11-20 09:33:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:22,693 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:22,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:33:22,695 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:33:22,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-20 09:33:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:23,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:33:23,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:23,118 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_164 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_164) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:33:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:23,193 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 09:33:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2022-11-20 09:33:23,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:23,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2147035165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:23,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:23,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-20 09:33:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999128674] [2022-11-20 09:33:23,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:33:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:33:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=117, Unknown=2, NotChecked=46, Total=210 [2022-11-20 09:33:23,705 INFO L87 Difference]: Start difference. First operand 335 states and 388 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:33:23,986 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_164 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_164) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_158 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_158))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|))))) is different from true [2022-11-20 09:33:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:24,666 INFO L93 Difference]: Finished difference Result 377 states and 415 transitions. [2022-11-20 09:33:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:33:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2022-11-20 09:33:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:24,668 INFO L225 Difference]: With dead ends: 377 [2022-11-20 09:33:24,668 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 09:33:24,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=419, Unknown=3, NotChecked=144, Total=756 [2022-11-20 09:33:24,669 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 249 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:24,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 188 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 155 Invalid, 0 Unknown, 234 Unchecked, 0.4s Time] [2022-11-20 09:33:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 09:33:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 342. [2022-11-20 09:33:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 312 states have (on average 1.1826923076923077) internal successors, (369), 325 states have internal predecessors, (369), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 09:33:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 389 transitions. [2022-11-20 09:33:24,676 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 389 transitions. Word has length 52 [2022-11-20 09:33:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:24,677 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 389 transitions. [2022-11-20 09:33:24,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:33:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 389 transitions. [2022-11-20 09:33:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:33:24,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:24,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:24,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (41)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:24,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:25,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:25,091 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:33:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1928976600, now seen corresponding path program 2 times [2022-11-20 09:33:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:25,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138084559] [2022-11-20 09:33:25,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:33:25,092 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 09:33:25,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:25,093 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (43)] Waiting until timeout for monitored process [2022-11-20 09:33:25,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:33:25,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:25,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:25,541 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_170 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_170))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:33:25,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:25,606 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 09:33:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2022-11-20 09:33:25,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:25,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:25,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138084559] [2022-11-20 09:33:25,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138084559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:25,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1740396931] [2022-11-20 09:33:25,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:33:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:33:25,978 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:33:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-20 09:33:26,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:33:26,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:26,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:26,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:26,584 WARN L859 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_176 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_176) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:33:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:26,647 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 09:33:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 2 not checked. [2022-11-20 09:33:26,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:26,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1740396931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:26,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:26,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 09:33:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871039991] [2022-11-20 09:33:26,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:33:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:33:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=83, Unknown=2, NotChecked=38, Total=156 [2022-11-20 09:33:26,900 INFO L87 Difference]: Start difference. First operand 342 states and 389 transitions. Second operand has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:33:27,145 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_170 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_170))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_176 (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| v_ArrVal_176) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|))))) is different from true [2022-11-20 09:33:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:27,664 INFO L93 Difference]: Finished difference Result 361 states and 401 transitions. [2022-11-20 09:33:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:33:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2022-11-20 09:33:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:27,666 INFO L225 Difference]: With dead ends: 361 [2022-11-20 09:33:27,667 INFO L226 Difference]: Without dead ends: 361 [2022-11-20 09:33:27,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=263, Unknown=3, NotChecked=114, Total=506 [2022-11-20 09:33:27,668 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 181 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:27,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 149 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 183 Unchecked, 0.3s Time] [2022-11-20 09:33:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-20 09:33:27,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 342. [2022-11-20 09:33:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 312 states have (on average 1.1762820512820513) internal successors, (367), 325 states have internal predecessors, (367), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 09:33:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 387 transitions. [2022-11-20 09:33:27,675 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 387 transitions. Word has length 52 [2022-11-20 09:33:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:27,676 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 387 transitions. [2022-11-20 09:33:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:33:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 387 transitions. [2022-11-20 09:33:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:33:27,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:27,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:27,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:27,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (43)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:28,081 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:33:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1447729377, now seen corresponding path program 1 times [2022-11-20 09:33:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:28,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50856519] [2022-11-20 09:33:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:28,081 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 09:33:28,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:28,082 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (45)] Waiting until timeout for monitored process [2022-11-20 09:33:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:28,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 09:33:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:28,903 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:33:28,903 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 09:33:29,550 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-20 09:33:29,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 09:33:29,954 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 09:33:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:30,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:33:30,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:33:30,562 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 09:33:30,671 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:33:30,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-11-20 09:33:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:30,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:31,358 INFO L321 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2022-11-20 09:33:31,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 09:33:31,381 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 20 treesize of output 14 [2022-11-20 09:33:31,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:31,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50856519] [2022-11-20 09:33:31,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50856519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:31,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1988158814] [2022-11-20 09:33:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:31,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:31,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:33:31,490 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:33:31,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-20 09:33:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:31,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 09:33:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:32,318 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:33:32,319 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 09:33:32,731 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-20 09:33:32,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 09:33:33,197 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 09:33:33,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:33,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:33:33,669 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 09:33:33,674 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 09:33:33,703 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:33:33,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-11-20 09:33:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:33,959 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 20 treesize of output 14 [2022-11-20 09:33:33,999 INFO L321 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2022-11-20 09:33:33,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 09:33:34,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1988158814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:34,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:34,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 18 [2022-11-20 09:33:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737036160] [2022-11-20 09:33:34,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:34,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 09:33:34,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 09:33:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=502, Unknown=8, NotChecked=0, Total=600 [2022-11-20 09:33:34,114 INFO L87 Difference]: Start difference. First operand 342 states and 387 transitions. Second operand has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 3 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 09:33:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:38,819 INFO L93 Difference]: Finished difference Result 365 states and 400 transitions. [2022-11-20 09:33:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:33:38,820 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 3 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 53 [2022-11-20 09:33:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:38,821 INFO L225 Difference]: With dead ends: 365 [2022-11-20 09:33:38,821 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 09:33:38,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=358, Invalid=1193, Unknown=9, NotChecked=0, Total=1560 [2022-11-20 09:33:38,822 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 253 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:38,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 457 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 210 Invalid, 0 Unknown, 371 Unchecked, 0.6s Time] [2022-11-20 09:33:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 09:33:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 342. [2022-11-20 09:33:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 312 states have (on average 1.1730769230769231) internal successors, (366), 325 states have internal predecessors, (366), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 09:33:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 386 transitions. [2022-11-20 09:33:38,829 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 386 transitions. Word has length 53 [2022-11-20 09:33:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:38,829 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 386 transitions. [2022-11-20 09:33:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 3 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 09:33:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 386 transitions. [2022-11-20 09:33:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 09:33:38,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:38,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:38,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:39,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (45)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:39,239 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:33:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1929937680, now seen corresponding path program 1 times [2022-11-20 09:33:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:33:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893264396] [2022-11-20 09:33:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:39,240 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 09:33:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:33:39,241 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:33:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (47)] Waiting until timeout for monitored process [2022-11-20 09:33:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:39,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:39,617 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:33:39,617 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 09:33:39,890 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_211 (_ BitVec 1)) (v_ArrVal_210 (_ BitVec 1)) (|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| v_ArrVal_210) |c_old(~global~0.base)| v_ArrVal_211) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2022-11-20 09:33:39,994 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 09:33:39,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 43 [2022-11-20 09:33:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-20 09:33:40,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:40,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:33:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893264396] [2022-11-20 09:33:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893264396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2105358507] [2022-11-20 09:33:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:40,380 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:33:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:33:40,381 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:33:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-11-20 09:33:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:40,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:33:40,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:41,149 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 09:33:41,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 09:33:41,423 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_225 (_ BitVec 1)) (|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| v_ArrVal_225) |c_#valid|)) is different from true [2022-11-20 09:33:41,518 INFO L321 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2022-11-20 09:33:41,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 43 [2022-11-20 09:33:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-20 09:33:41,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2105358507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:33:41,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:41,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 09:33:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455530661] [2022-11-20 09:33:41,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:41,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 09:33:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:33:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 09:33:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=397, Unknown=2, NotChecked=82, Total=552 [2022-11-20 09:33:41,932 INFO L87 Difference]: Start difference. First operand 342 states and 386 transitions. Second operand has 20 states, 17 states have (on average 4.352941176470588) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:34:16,109 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_225 (_ BitVec 1)) (|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| v_ArrVal_225) |c_#valid|)) (exists ((v_ArrVal_211 (_ BitVec 1)) (v_ArrVal_210 (_ BitVec 1)) (|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| v_ArrVal_210) |c_old(~global~0.base)| v_ArrVal_211) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|))))) is different from true [2022-11-20 09:34:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:16,270 INFO L93 Difference]: Finished difference Result 379 states and 412 transitions. [2022-11-20 09:34:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 09:34:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.352941176470588) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 09:34:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:16,273 INFO L225 Difference]: With dead ends: 379 [2022-11-20 09:34:16,273 INFO L226 Difference]: Without dead ends: 379 [2022-11-20 09:34:16,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=385, Invalid=1414, Unknown=19, NotChecked=252, Total=2070 [2022-11-20 09:34:16,275 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 554 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 588 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:16,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 421 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 288 Invalid, 0 Unknown, 588 Unchecked, 0.7s Time] [2022-11-20 09:34:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-20 09:34:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 341. [2022-11-20 09:34:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 312 states have (on average 1.1666666666666667) internal successors, (364), 324 states have internal predecessors, (364), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 09:34:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 384 transitions. [2022-11-20 09:34:16,282 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 384 transitions. Word has length 54 [2022-11-20 09:34:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:16,282 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 384 transitions. [2022-11-20 09:34:16,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.352941176470588) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:34:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 384 transitions. [2022-11-20 09:34:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 09:34:16,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:16,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:16,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:16,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (47)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:16,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:16,688 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:34:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 301474113, now seen corresponding path program 1 times [2022-11-20 09:34:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:34:16,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419256615] [2022-11-20 09:34:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:16,688 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 09:34:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:34:16,689 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:16,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (49)] Waiting until timeout for monitored process [2022-11-20 09:34:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:16,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:34:16,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:17,007 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_235 (_ BitVec 32))) (= (store |c_old(#length)| |c_parse_input_c1_~x~0#1.base| v_ArrVal_235) |c_#length|)) is different from true [2022-11-20 09:34:17,028 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_235 (_ BitVec 32))) (= (store |c_old(#length)| c_~global~0.base v_ArrVal_235) |c_#length|)) is different from true [2022-11-20 09:34:17,084 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:17,085 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 09:34:17,334 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 09:34:17,434 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:17,435 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 09:34:18,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:34:18,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 69 [2022-11-20 09:34:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-20 09:34:18,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:18,622 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 12 treesize of output 10 [2022-11-20 09:34:18,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:34:18,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419256615] [2022-11-20 09:34:18,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419256615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:18,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1633186807] [2022-11-20 09:34:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:34:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:34:18,725 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:34:18,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-20 09:34:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:19,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:34:19,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:19,101 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_245 (_ BitVec 32))) (= (store |c_old(#length)| |c_parse_input_c1_~x~0#1.base| v_ArrVal_245) |c_#length|)) is different from true [2022-11-20 09:34:19,119 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_245 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| c_~global~0.base v_ArrVal_245))) is different from true [2022-11-20 09:34:19,164 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:19,164 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 09:34:19,318 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 09:34:19,392 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:19,392 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 09:34:19,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:34:19,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 69 [2022-11-20 09:34:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-20 09:34:19,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:20,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-11-20 09:34:20,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1633186807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:20,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:20,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2022-11-20 09:34:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042209644] [2022-11-20 09:34:20,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:34:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:34:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:34:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=228, Unknown=4, NotChecked=132, Total=420 [2022-11-20 09:34:20,140 INFO L87 Difference]: Start difference. First operand 341 states and 384 transitions. Second operand has 16 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 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 09:34:20,325 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_235 (_ BitVec 32))) (= (store |c_old(#length)| |c_parse_input_c1_~x~0#1.base| v_ArrVal_235) |c_#length|)) (exists ((v_ArrVal_245 (_ BitVec 32))) (= (store |c_old(#length)| |c_parse_input_c1_~x~0#1.base| v_ArrVal_245) |c_#length|))) is different from true [2022-11-20 09:34:20,329 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_245 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| c_~global~0.base v_ArrVal_245))) (exists ((v_ArrVal_235 (_ BitVec 32))) (= (store |c_old(#length)| c_~global~0.base v_ArrVal_235) |c_#length|))) is different from true [2022-11-20 09:34:32,824 WARN L233 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 41 DAG size of output: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:34:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:33,217 INFO L93 Difference]: Finished difference Result 366 states and 401 transitions. [2022-11-20 09:34:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:34:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 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 55 [2022-11-20 09:34:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:33,219 INFO L225 Difference]: With dead ends: 366 [2022-11-20 09:34:33,219 INFO L226 Difference]: Without dead ends: 366 [2022-11-20 09:34:33,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=123, Invalid=447, Unknown=6, NotChecked=294, Total=870 [2022-11-20 09:34:33,220 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 114 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 588 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:33,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 238 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 72 Invalid, 0 Unknown, 588 Unchecked, 0.2s Time] [2022-11-20 09:34:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-20 09:34:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 341. [2022-11-20 09:34:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 312 states have (on average 1.1634615384615385) internal successors, (363), 324 states have internal predecessors, (363), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 09:34:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 383 transitions. [2022-11-20 09:34:33,227 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 383 transitions. Word has length 55 [2022-11-20 09:34:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:33,227 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 383 transitions. [2022-11-20 09:34:33,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 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 09:34:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 383 transitions. [2022-11-20 09:34:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 09:34:33,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:33,228 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:33,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2022-11-20 09:34:33,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (49)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:33,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:33,632 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:34:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:33,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1039811026, now seen corresponding path program 2 times [2022-11-20 09:34:33,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:34:33,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837846058] [2022-11-20 09:34:33,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:33,633 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 09:34:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:34:33,635 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:33,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (51)] Waiting until timeout for monitored process [2022-11-20 09:34:33,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:34:33,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:33,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 09:34:33,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:36,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:36,637 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 09:34:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:34:36,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:41,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:34:41,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837846058] [2022-11-20 09:34:41,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837846058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:41,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [601862720] [2022-11-20 09:34:41,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:41,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:34:41,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:34:41,653 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:34:41,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-20 09:34:42,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:34:42,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:42,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:34:42,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:44,780 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 09:34:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:34:44,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:45,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [601862720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:45,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:45,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 09:34:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294442907] [2022-11-20 09:34:45,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:45,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:34:45,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:34:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:34:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=114, Unknown=4, NotChecked=0, Total=156 [2022-11-20 09:34:45,388 INFO L87 Difference]: Start difference. First operand 341 states and 383 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:34:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:50,289 INFO L93 Difference]: Finished difference Result 362 states and 398 transitions. [2022-11-20 09:34:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:34:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-20 09:34:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:50,292 INFO L225 Difference]: With dead ends: 362 [2022-11-20 09:34:50,292 INFO L226 Difference]: Without dead ends: 362 [2022-11-20 09:34:50,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=155, Invalid=391, Unknown=6, NotChecked=0, Total=552 [2022-11-20 09:34:50,293 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 248 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:50,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 269 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 157 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-20 09:34:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-20 09:34:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 297. [2022-11-20 09:34:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 270 states have (on average 1.1592592592592592) internal successors, (313), 282 states have internal predecessors, (313), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:34:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 331 transitions. [2022-11-20 09:34:50,299 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 331 transitions. Word has length 56 [2022-11-20 09:34:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:50,300 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 331 transitions. [2022-11-20 09:34:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:34:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 331 transitions. [2022-11-20 09:34:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 09:34:50,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:50,301 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:50,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:50,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (51)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:50,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:50,706 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:34:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash 717947847, now seen corresponding path program 1 times [2022-11-20 09:34:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:34:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922167954] [2022-11-20 09:34:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:50,707 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 09:34:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:34:50,707 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:34:50,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (53)] Waiting until timeout for monitored process [2022-11-20 09:34:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:34:50,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:51,322 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:51,322 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 09:34:51,680 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:34:51,680 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 09:34:51,977 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 09:34:52,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:52,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:34:52,419 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:34:52,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-11-20 09:34:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:52,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:53,446 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 12 treesize of output 10 [2022-11-20 09:34:53,479 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 09:34:53,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-20 09:34:53,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:34:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922167954] [2022-11-20 09:34:53,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922167954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2113785399] [2022-11-20 09:34:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:53,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:34:53,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:34:53,739 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:34:53,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-11-20 09:34:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:54,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:34:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:54,417 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:34:54,418 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 09:34:54,682 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:34:54,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 09:34:54,955 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 09:34:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:55,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:34:55,274 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:34:55,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-11-20 09:34:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:55,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:55,806 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 09:34:55,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-20 09:34:55,843 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 12 treesize of output 10 [2022-11-20 09:34:55,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2113785399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:55,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:55,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-20 09:34:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013652830] [2022-11-20 09:34:55,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:34:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:34:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:34:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=299, Unknown=12, NotChecked=0, Total=380 [2022-11-20 09:34:55,963 INFO L87 Difference]: Start difference. First operand 297 states and 331 transitions. Second operand has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:35:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:05,894 INFO L93 Difference]: Finished difference Result 363 states and 396 transitions. [2022-11-20 09:35:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:35:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2022-11-20 09:35:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:05,895 INFO L225 Difference]: With dead ends: 363 [2022-11-20 09:35:05,895 INFO L226 Difference]: Without dead ends: 363 [2022-11-20 09:35:05,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=226, Invalid=686, Unknown=18, NotChecked=0, Total=930 [2022-11-20 09:35:05,896 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 305 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:05,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 427 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 159 Invalid, 0 Unknown, 380 Unchecked, 0.5s Time] [2022-11-20 09:35:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-20 09:35:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 297. [2022-11-20 09:35:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 270 states have (on average 1.1481481481481481) internal successors, (310), 282 states have internal predecessors, (310), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:35:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 328 transitions. [2022-11-20 09:35:05,901 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 328 transitions. Word has length 59 [2022-11-20 09:35:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:05,901 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 328 transitions. [2022-11-20 09:35:05,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:35:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 328 transitions. [2022-11-20 09:35:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 09:35:05,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:05,903 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:05,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (53)] Ended with exit code 0 [2022-11-20 09:35:06,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:06,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:35:06,316 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:35:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 781546727, now seen corresponding path program 1 times [2022-11-20 09:35:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:06,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446995293] [2022-11-20 09:35:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:06,317 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 09:35:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:06,318 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:35:06,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (55)] Waiting until timeout for monitored process [2022-11-20 09:35:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 09:35:06,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:06,954 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:35:06,955 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 09:35:09,785 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 09:35:09,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 43 [2022-11-20 09:35:10,093 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 09:35:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:10,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:10,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:35:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446995293] [2022-11-20 09:35:10,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446995293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146533936] [2022-11-20 09:35:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:10,699 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:35:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:35:10,700 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:35:10,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-11-20 09:35:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 09:35:11,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:15,820 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 09:35:15,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 09:35:22,850 INFO L321 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2022-11-20 09:35:22,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 43 [2022-11-20 09:35:23,363 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 09:35:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:23,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:23,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [146533936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:23,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:35:23,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-20 09:35:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473456749] [2022-11-20 09:35:23,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:35:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:35:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:35:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=641, Unknown=14, NotChecked=0, Total=756 [2022-11-20 09:35:23,801 INFO L87 Difference]: Start difference. First operand 297 states and 328 transitions. Second operand has 22 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:35:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:51,766 INFO L93 Difference]: Finished difference Result 355 states and 383 transitions. [2022-11-20 09:35:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 09:35:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2022-11-20 09:35:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:51,768 INFO L225 Difference]: With dead ends: 355 [2022-11-20 09:35:51,768 INFO L226 Difference]: Without dead ends: 355 [2022-11-20 09:35:51,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=594, Invalid=2568, Unknown=30, NotChecked=0, Total=3192 [2022-11-20 09:35:51,770 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 616 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:51,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 604 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 672 Invalid, 0 Unknown, 465 Unchecked, 1.5s Time] [2022-11-20 09:35:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-20 09:35:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 296. [2022-11-20 09:35:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 270 states have (on average 1.1407407407407408) internal successors, (308), 281 states have internal predecessors, (308), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:35:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 326 transitions. [2022-11-20 09:35:51,776 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 326 transitions. Word has length 60 [2022-11-20 09:35:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:51,776 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 326 transitions. [2022-11-20 09:35:51,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:35:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 326 transitions. [2022-11-20 09:35:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 09:35:51,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:51,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:51,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:51,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (55)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:52,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:35:52,182 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:35:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:52,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1541855194, now seen corresponding path program 1 times [2022-11-20 09:35:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:52,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816316448] [2022-11-20 09:35:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:52,182 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 09:35:52,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:52,183 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:35:52,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (57)] Waiting until timeout for monitored process [2022-11-20 09:35:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:52,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 09:35:52,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:53,046 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:35:53,046 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 09:35:53,698 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 09:35:53,924 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:35:53,924 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 09:35:55,224 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 09:35:55,230 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 09:35:55,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:35:55,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 69 [2022-11-20 09:35:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:55,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:56,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-20 09:35:56,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:35:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816316448] [2022-11-20 09:35:56,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816316448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1378274453] [2022-11-20 09:35:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:56,492 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:35:56,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:35:56,493 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:35:56,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2022-11-20 09:35:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:56,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 09:35:56,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:58,090 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:35:58,091 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 09:35:58,142 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:35:58,142 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 09:36:03,138 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 09:36:03,538 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:36:03,539 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 09:36:03,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:36:03,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 09:36:04,501 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 09:36:04,511 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 09:36:04,693 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:36:04,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-11-20 09:36:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:04,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:05,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-20 09:36:05,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1378274453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:05,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:05,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-11-20 09:36:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272736564] [2022-11-20 09:36:05,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 09:36:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 09:36:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1018, Unknown=52, NotChecked=0, Total=1190 [2022-11-20 09:36:05,321 INFO L87 Difference]: Start difference. First operand 296 states and 326 transitions. Second operand has 28 states, 25 states have (on average 4.48) internal successors, (112), 23 states have internal predecessors, (112), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:36:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:12,183 INFO L93 Difference]: Finished difference Result 361 states and 394 transitions. [2022-11-20 09:36:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:36:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.48) internal successors, (112), 23 states have internal predecessors, (112), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 61 [2022-11-20 09:36:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:12,185 INFO L225 Difference]: With dead ends: 361 [2022-11-20 09:36:12,185 INFO L226 Difference]: Without dead ends: 361 [2022-11-20 09:36:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=245, Invalid=2037, Unknown=70, NotChecked=0, Total=2352 [2022-11-20 09:36:12,186 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 201 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 646 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:12,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 695 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 169 Invalid, 0 Unknown, 646 Unchecked, 0.5s Time] [2022-11-20 09:36:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-20 09:36:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 301. [2022-11-20 09:36:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 275 states have (on average 1.1381818181818182) internal successors, (313), 286 states have internal predecessors, (313), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:36:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 331 transitions. [2022-11-20 09:36:12,191 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 331 transitions. Word has length 61 [2022-11-20 09:36:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:12,192 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 331 transitions. [2022-11-20 09:36:12,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.48) internal successors, (112), 23 states have internal predecessors, (112), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 09:36:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 331 transitions. [2022-11-20 09:36:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 09:36:12,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:12,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:12,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (58)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:12,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (57)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:12,598 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:36:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash -340935575, now seen corresponding path program 1 times [2022-11-20 09:36:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:12,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755255376] [2022-11-20 09:36:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:12,599 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 09:36:12,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:12,600 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (59)] Waiting until timeout for monitored process [2022-11-20 09:36:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:12,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:36:12,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:13,404 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 22 treesize of output 10 [2022-11-20 09:36:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:13,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:14,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-20 09:36:14,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:14,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755255376] [2022-11-20 09:36:14,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755255376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:14,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076772222] [2022-11-20 09:36:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:36:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:36:14,102 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:36:14,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2022-11-20 09:36:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:14,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:36:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:15,210 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 18 treesize of output 10 [2022-11-20 09:36:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:36:15,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:36:15,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076772222] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:15,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 5] total 20 [2022-11-20 09:36:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477624422] [2022-11-20 09:36:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:36:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:36:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:36:15,464 INFO L87 Difference]: Start difference. First operand 301 states and 331 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:36:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:15,953 INFO L93 Difference]: Finished difference Result 320 states and 344 transitions. [2022-11-20 09:36:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:36:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-11-20 09:36:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:15,955 INFO L225 Difference]: With dead ends: 320 [2022-11-20 09:36:15,955 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 09:36:15,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:36:15,956 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 194 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:15,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 97 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:36:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 09:36:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 295. [2022-11-20 09:36:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 270 states have (on average 1.1111111111111112) internal successors, (300), 280 states have internal predecessors, (300), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:36:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 318 transitions. [2022-11-20 09:36:15,962 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 318 transitions. Word has length 63 [2022-11-20 09:36:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:15,962 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 318 transitions. [2022-11-20 09:36:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:36:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 318 transitions. [2022-11-20 09:36:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 09:36:15,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:15,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:15,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2022-11-20 09:36:16,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (59)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:16,367 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:36:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 40877192, now seen corresponding path program 1 times [2022-11-20 09:36:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:16,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359106469] [2022-11-20 09:36:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:16,368 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 09:36:16,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:16,369 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:16,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (61)] Waiting until timeout for monitored process [2022-11-20 09:36:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:16,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:36:16,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 09:36:16,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:16,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:16,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359106469] [2022-11-20 09:36:16,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359106469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:16,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:16,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:36:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579249446] [2022-11-20 09:36:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:16,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:36:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:36:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:16,545 INFO L87 Difference]: Start difference. First operand 295 states and 318 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:36:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:16,653 INFO L93 Difference]: Finished difference Result 305 states and 328 transitions. [2022-11-20 09:36:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:36:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-11-20 09:36:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:16,655 INFO L225 Difference]: With dead ends: 305 [2022-11-20 09:36:16,655 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 09:36:16,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 09:36:16,656 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:16,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:36:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 09:36:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 294. [2022-11-20 09:36:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 270 states have (on average 1.1074074074074074) internal successors, (299), 279 states have internal predecessors, (299), 7 states have call successors, (7), 7 states have call predecessors, (7), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:36:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 317 transitions. [2022-11-20 09:36:16,662 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 317 transitions. Word has length 63 [2022-11-20 09:36:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:16,663 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 317 transitions. [2022-11-20 09:36:16,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:36:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 317 transitions. [2022-11-20 09:36:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:36:16,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:16,664 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:16,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (61)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:16,879 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:36:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash -460493020, now seen corresponding path program 1 times [2022-11-20 09:36:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555309757] [2022-11-20 09:36:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:16,880 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 09:36:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:16,880 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:16,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (62)] Waiting until timeout for monitored process [2022-11-20 09:36:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:36:17,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 43 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:36:17,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:18,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-20 09:36:18,643 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 19 treesize of output 15 [2022-11-20 09:36:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:36:19,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:19,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555309757] [2022-11-20 09:36:19,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555309757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:19,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:19,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2022-11-20 09:36:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696612340] [2022-11-20 09:36:19,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:36:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:36:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:36:19,473 INFO L87 Difference]: Start difference. First operand 294 states and 317 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:36:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:21,019 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2022-11-20 09:36:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:36:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2022-11-20 09:36:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:21,021 INFO L225 Difference]: With dead ends: 407 [2022-11-20 09:36:21,021 INFO L226 Difference]: Without dead ends: 407 [2022-11-20 09:36:21,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:36:21,021 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 360 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 255 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:36:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-20 09:36:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 244. [2022-11-20 09:36:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 226 states have (on average 1.0884955752212389) internal successors, (246), 231 states have internal predecessors, (246), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 09:36:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2022-11-20 09:36:21,027 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 65 [2022-11-20 09:36:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:21,027 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2022-11-20 09:36:21,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:36:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2022-11-20 09:36:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 09:36:21,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:21,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:21,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (62)] Ended with exit code 0 [2022-11-20 09:36:21,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:21,241 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:36:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash 701075492, now seen corresponding path program 1 times [2022-11-20 09:36:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:21,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882684789] [2022-11-20 09:36:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:21,242 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 09:36:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:21,243 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (63)] Waiting until timeout for monitored process [2022-11-20 09:36:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:21,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:36:21,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:21,442 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 09:36:21,906 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:36:21,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 27 [2022-11-20 09:36:21,989 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:36:21,989 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 09:36:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:22,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:22,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:22,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882684789] [2022-11-20 09:36:22,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882684789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:22,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:22,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2022-11-20 09:36:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802829114] [2022-11-20 09:36:22,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:22,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:36:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:36:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:36:22,683 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:36:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:23,149 INFO L93 Difference]: Finished difference Result 342 states and 370 transitions. [2022-11-20 09:36:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:36:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2022-11-20 09:36:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:23,150 INFO L225 Difference]: With dead ends: 342 [2022-11-20 09:36:23,151 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 09:36:23,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:36:23,151 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 80 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:23,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 142 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 68 Unchecked, 0.3s Time] [2022-11-20 09:36:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 09:36:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 289. [2022-11-20 09:36:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 267 states have (on average 1.0898876404494382) internal successors, (291), 274 states have internal predecessors, (291), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 09:36:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 311 transitions. [2022-11-20 09:36:23,157 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 311 transitions. Word has length 66 [2022-11-20 09:36:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:23,157 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 311 transitions. [2022-11-20 09:36:23,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:36:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 311 transitions. [2022-11-20 09:36:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 09:36:23,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:23,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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 09:36:23,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (63)] Ended with exit code 0 [2022-11-20 09:36:23,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:23,363 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 09:36:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:23,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1953429379, now seen corresponding path program 1 times [2022-11-20 09:36:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:23,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700303043] [2022-11-20 09:36:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:23,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:23,365 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:23,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (64)] Waiting until timeout for monitored process [2022-11-20 09:36:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:36:23,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:36:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:36:23,761 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 09:36:23,762 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:36:23,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-11-20 09:36:23,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-11-20 09:36:23,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-11-20 09:36:23,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-11-20 09:36:23,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-11-20 09:36:23,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-11-20 09:36:23,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-11-20 09:36:23,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-11-20 09:36:23,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-11-20 09:36:23,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2022-11-20 09:36:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2022-11-20 09:36:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (11 of 23 remaining) [2022-11-20 09:36:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (10 of 23 remaining) [2022-11-20 09:36:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (9 of 23 remaining) [2022-11-20 09:36:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (8 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (7 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (6 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (5 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (4 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (3 of 23 remaining) [2022-11-20 09:36:23,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE (2 of 23 remaining) [2022-11-20 09:36:23,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE (1 of 23 remaining) [2022-11-20 09:36:23,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE (0 of 23 remaining) [2022-11-20 09:36:23,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 (64)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/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 09:36:23,990 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:23,994 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:36:24,042 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Expected only CPrimitive but got *CHAR at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:356) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateBitvecLiteral(CACSL2BoogieBacktranslator.java:1212) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateExpression(CACSL2BoogieBacktranslator.java:1021) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramStateEntry(CACSL2BoogieBacktranslator.java:658) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramState(CACSL2BoogieBacktranslator.java:633) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.handleCASTFunctionCallExpression(CACSL2BoogieBacktranslator.java:490) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProgramExecution(CACSL2BoogieBacktranslator.java:267) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:217) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:582) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:180) 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) [2022-11-20 09:36:24,045 INFO L158 Benchmark]: Toolchain (without parser) took 349585.55ms. Allocated memory was 71.3MB in the beginning and 130.0MB in the end (delta: 58.7MB). Free memory was 44.5MB in the beginning and 98.2MB in the end (delta: -53.8MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,045 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:36:24,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.97ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 67.9kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.04ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 41.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,046 INFO L158 Benchmark]: Boogie Preprocessor took 34.48ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 40.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,046 INFO L158 Benchmark]: RCFGBuilder took 623.25ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 57.4MB in the end (delta: -17.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,046 INFO L158 Benchmark]: TraceAbstraction took 348300.95ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 56.7MB in the beginning and 98.2MB in the end (delta: -41.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2022-11-20 09:36:24,047 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 71.3MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.97ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 67.9kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.04ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 41.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.48ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 40.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.25ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 57.4MB in the end (delta: -17.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 348300.95ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 56.7MB in the beginning and 98.2MB in the end (delta: -41.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: Expected only CPrimitive but got *CHAR de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Expected only CPrimitive but got *CHAR: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:356) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 09:36:24,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3902dcf7-3ce2-4b5d-a4b1-097d26550bf2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Expected only CPrimitive but got *CHAR