./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9551eac17e9ca0a42612f73eb01545dde991582 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:53:14,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:53:14,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:53:14,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:53:14,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:53:14,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:53:14,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:53:14,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:53:14,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:53:14,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:53:14,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:53:14,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:53:14,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:53:14,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:53:14,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:53:14,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:53:14,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:53:14,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:53:14,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:53:14,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:53:14,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:53:14,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:53:14,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:53:14,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:53:14,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:53:14,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:53:14,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:53:14,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:53:14,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:53:14,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:53:14,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:53:14,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:53:14,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:53:14,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:53:14,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:53:14,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:53:14,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:53:14,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:53:14,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:53:14,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:53:14,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:53:14,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:53:14,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:53:14,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:53:14,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:53:14,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:53:14,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:53:14,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:53:14,216 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:53:14,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:53:14,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:53:14,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:53:14,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:53:14,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:53:14,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:53:14,218 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:53:14,218 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:53:14,219 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:53:14,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:53:14,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:53:14,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:53:14,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:53:14,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:53:14,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:53:14,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:53:14,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:53:14,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:53:14,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:53:14,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:53:14,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:53:14,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:53:14,223 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_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9551eac17e9ca0a42612f73eb01545dde991582 [2021-10-13 00:53:14,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:53:14,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:53:14,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:53:14,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:53:14,585 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:53:14,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-13 00:53:14,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/data/ebf975f6c/f8f2e33a60984120bb3a54ab2026947c/FLAGb28645259 [2021-10-13 00:53:15,324 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:53:15,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-13 00:53:15,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/data/ebf975f6c/f8f2e33a60984120bb3a54ab2026947c/FLAGb28645259 [2021-10-13 00:53:15,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/data/ebf975f6c/f8f2e33a60984120bb3a54ab2026947c [2021-10-13 00:53:15,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:53:15,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:53:15,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:15,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:53:15,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:53:15,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:15" (1/1) ... [2021-10-13 00:53:15,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a40436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:15, skipping insertion in model container [2021-10-13 00:53:15,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:53:15" (1/1) ... [2021-10-13 00:53:15,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:53:15,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:53:16,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:16,025 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:53:16,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:53:16,142 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:53:16,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16 WrapperNode [2021-10-13 00:53:16,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:53:16,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:53:16,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:53:16,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:53:16,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:53:16,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:53:16,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:53:16,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:53:16,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (1/1) ... [2021-10-13 00:53:16,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:53:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:16,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:53:16,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:53:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:53:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:53:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:53:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:53:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:53:16,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:53:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:53:16,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:53:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:53:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:53:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:53:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:53:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:53:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:53:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:53:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:53:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:53:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:53:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:53:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:53:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:53:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:53:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:53:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:53:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:53:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:53:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:53:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:53:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:53:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:53:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:53:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:53:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:53:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:53:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:53:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:53:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:53:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:53:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:53:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:53:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:53:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:53:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:53:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:53:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:53:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:53:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:53:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:53:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:53:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:53:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:53:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:53:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:53:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:53:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:53:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:53:16,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:53:16,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:53:16,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:53:16,311 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:53:16,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:53:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:53:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:53:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:53:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:53:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:53:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:53:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:53:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:53:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:53:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:53:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:53:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:53:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:53:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:53:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:53:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:53:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:53:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:53:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:53:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:53:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:53:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:53:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:53:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:53:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:53:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:53:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:53:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:53:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:53:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:53:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:53:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:53:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:53:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:53:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:53:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:53:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:53:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:53:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:53:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:53:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:53:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:53:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:53:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:53:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:53:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:53:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:53:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:53:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:53:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:53:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:53:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:53:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:53:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:53:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:53:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:53:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:53:16,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:53:16,855 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-13 00:53:16,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:16 BoogieIcfgContainer [2021-10-13 00:53:16,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:53:16,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:53:16,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:53:16,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:53:16,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:53:15" (1/3) ... [2021-10-13 00:53:16,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325046ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:53:16, skipping insertion in model container [2021-10-13 00:53:16,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:53:16" (2/3) ... [2021-10-13 00:53:16,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325046ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:53:16, skipping insertion in model container [2021-10-13 00:53:16,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:16" (3/3) ... [2021-10-13 00:53:16,906 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-10-13 00:53:16,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:53:16,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:53:16,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:53:16,989 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:53:16,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:53:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:53:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:53:17,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:17,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:17,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-13 00:53:17,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:17,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987077036] [2021-10-13 00:53:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:17,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:17,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:17,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4818449] [2021-10-13 00:53:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:17,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:17,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:17,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:17,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:53:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:53:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:17,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:17,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987077036] [2021-10-13 00:53:17,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:17,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4818449] [2021-10-13 00:53:17,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4818449] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:17,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:17,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:53:17,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363957438] [2021-10-13 00:53:17,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:53:17,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:53:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:53:17,586 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:53:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:17,653 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-13 00:53:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:53:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 12 [2021-10-13 00:53:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:17,665 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:53:17,666 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:53:17,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:53:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 00:53:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-10-13 00:53:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-13 00:53:17,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-13 00:53:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:17,716 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-13 00:53:17,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:53:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-13 00:53:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:53:17,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:17,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:17,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 00:53:17,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 00:53:17,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-13 00:53:17,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:17,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050201172] [2021-10-13 00:53:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:17,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:17,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:17,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646065067] [2021-10-13 00:53:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:17,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:17,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:17,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:17,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:53:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:18,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:53:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:18,179 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:53:18,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-13 00:53:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:18,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:18,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050201172] [2021-10-13 00:53:18,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:18,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646065067] [2021-10-13 00:53:18,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646065067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:18,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:18,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:53:18,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315137367] [2021-10-13 00:53:18,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:53:18,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:53:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:18,214 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-13 00:53:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:18,238 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-13 00:53:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:53:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2021-10-13 00:53:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:18,240 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:53:18,240 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:53:18,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:53:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:53:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-10-13 00:53:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-13 00:53:18,246 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-13 00:53:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-13 00:53:18,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-13 00:53:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-13 00:53:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:53:18,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:18,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:18,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:18,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:18,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-13 00:53:18,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:18,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525440504] [2021-10-13 00:53:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:18,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:18,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:18,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436786890] [2021-10-13 00:53:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:18,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:18,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:18,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:53:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:18,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:53:18,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:18,788 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-13 00:53:18,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-10-13 00:53:18,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 35 [2021-10-13 00:53:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:19,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:19,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525440504] [2021-10-13 00:53:19,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:19,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436786890] [2021-10-13 00:53:19,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436786890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:19,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:19,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:53:19,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927880745] [2021-10-13 00:53:19,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:19,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:19,177 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 00:53:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:19,344 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-13 00:53:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 13 [2021-10-13 00:53:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:19,346 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:53:19,346 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:53:19,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:53:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-13 00:53:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-10-13 00:53:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-13 00:53:19,352 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-10-13 00:53:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:19,353 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-13 00:53:19,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 00:53:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-13 00:53:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:53:19,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:19,354 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:19,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:19,555 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:19,556 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2021-10-13 00:53:19,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:19,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848593415] [2021-10-13 00:53:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:19,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:19,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:19,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324849514] [2021-10-13 00:53:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:19,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:19,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:19,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:53:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:19,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:53:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:19,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:19,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848593415] [2021-10-13 00:53:19,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:19,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324849514] [2021-10-13 00:53:19,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324849514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:19,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:19,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:53:19,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834435515] [2021-10-13 00:53:19,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:19,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:19,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:19,819 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-13 00:53:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:19,942 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-13 00:53:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:19,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 17 [2021-10-13 00:53:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:19,944 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:53:19,944 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:53:19,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:53:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-13 00:53:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 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) [2021-10-13 00:53:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-13 00:53:19,951 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2021-10-13 00:53:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:19,952 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-13 00:53:19,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-13 00:53:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-13 00:53:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:53:19,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:19,953 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:19,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 00:53:20,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:20,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:20,170 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2021-10-13 00:53:20,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:20,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728628329] [2021-10-13 00:53:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:20,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:20,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:20,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028680713] [2021-10-13 00:53:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:20,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:20,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:20,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:20,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:53:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:20,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:53:20,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:20,456 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-13 00:53:20,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2021-10-13 00:53:20,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 24 [2021-10-13 00:53:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:20,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:20,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728628329] [2021-10-13 00:53:20,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:20,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028680713] [2021-10-13 00:53:20,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028680713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:20,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:20,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:53:20,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810228155] [2021-10-13 00:53:20,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:53:20,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:53:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:53:20,890 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:53:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:21,508 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-13 00:53:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:53:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 17 [2021-10-13 00:53:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:21,510 INFO L225 Difference]: With dead ends: 40 [2021-10-13 00:53:21,510 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 00:53:21,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 324.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:21,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 00:53:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-13 00:53:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 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) [2021-10-13 00:53:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-13 00:53:21,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2021-10-13 00:53:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:21,518 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-13 00:53:21,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:53:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-13 00:53:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:53:21,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:21,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:21,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:21,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:21,733 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:21,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2021-10-13 00:53:21,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:21,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792884117] [2021-10-13 00:53:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:21,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:21,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327191496] [2021-10-13 00:53:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:21,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:21,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:21,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:53:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:53:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:22,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:22,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792884117] [2021-10-13 00:53:22,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:22,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327191496] [2021-10-13 00:53:22,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327191496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:22,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:22,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:53:22,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513420868] [2021-10-13 00:53:22,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:53:22,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:53:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:22,159 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-13 00:53:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:22,244 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-10-13 00:53:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:53:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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 19 [2021-10-13 00:53:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:22,251 INFO L225 Difference]: With dead ends: 48 [2021-10-13 00:53:22,251 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 00:53:22,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 00:53:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-10-13 00:53:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 39 states have internal predecessors, (47), 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) [2021-10-13 00:53:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-10-13 00:53:22,260 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2021-10-13 00:53:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:22,261 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-10-13 00:53:22,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-13 00:53:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-10-13 00:53:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:53:22,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:22,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:22,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:53:22,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2021-10-13 00:53:22,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:22,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479223754] [2021-10-13 00:53:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:22,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:22,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:22,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472309652] [2021-10-13 00:53:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:22,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:22,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:22,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:53:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:22,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:53:22,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:23,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:23,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479223754] [2021-10-13 00:53:23,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:23,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472309652] [2021-10-13 00:53:23,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472309652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:23,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:23,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:53:23,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844027655] [2021-10-13 00:53:23,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:53:23,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:53:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:53:23,018 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-13 00:53:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:23,462 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-10-13 00:53:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:53:23,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 19 [2021-10-13 00:53:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:23,465 INFO L225 Difference]: With dead ends: 45 [2021-10-13 00:53:23,465 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 00:53:23,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:53:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 00:53:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-10-13 00:53:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 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) [2021-10-13 00:53:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-13 00:53:23,470 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2021-10-13 00:53:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:23,471 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-13 00:53:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-13 00:53:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-13 00:53:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:53:23,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:23,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:23,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:23,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:23,701 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2021-10-13 00:53:23,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:23,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450505178] [2021-10-13 00:53:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:23,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:23,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:23,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650319035] [2021-10-13 00:53:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:23,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:23,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:23,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:53:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:23,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:53:23,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:53:24,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:24,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450505178] [2021-10-13 00:53:24,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:24,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650319035] [2021-10-13 00:53:24,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650319035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:24,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:24,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:53:24,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227742047] [2021-10-13 00:53:24,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:24,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:24,129 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 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) [2021-10-13 00:53:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:24,182 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-10-13 00:53:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 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 20 [2021-10-13 00:53:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:24,184 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:53:24,184 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 00:53:24,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 00:53:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-13 00:53:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 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) [2021-10-13 00:53:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-13 00:53:24,204 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2021-10-13 00:53:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:24,207 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-13 00:53:24,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 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) [2021-10-13 00:53:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-13 00:53:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:53:24,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:24,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:24,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:24,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:24,429 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2021-10-13 00:53:24,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:24,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105396818] [2021-10-13 00:53:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:24,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:24,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:24,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394949781] [2021-10-13 00:53:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:24,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:24,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:24,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:24,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:53:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:24,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:53:24,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:24,688 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:53:24,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-13 00:53:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:53:24,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:24,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105396818] [2021-10-13 00:53:24,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:24,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394949781] [2021-10-13 00:53:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394949781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:24,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:24,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:53:24,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742894177] [2021-10-13 00:53:24,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:53:24,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:53:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:24,750 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 00:53:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:24,761 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-13 00:53:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:53:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2021-10-13 00:53:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:24,763 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:53:24,763 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:53:24,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:53:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:53:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-13 00:53:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-13 00:53:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-13 00:53:24,768 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-10-13 00:53:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:24,769 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-13 00:53:24,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 00:53:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-13 00:53:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:53:24,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:24,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:24,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:24,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:24,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:53:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:24,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2021-10-13 00:53:24,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:24,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980701394] [2021-10-13 00:53:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:24,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:25,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:25,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731340053] [2021-10-13 00:53:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:25,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:25,034 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:25,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:53:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:25,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:53:25,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:25,317 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-10-13 00:53:25,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2021-10-13 00:53:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:53:25,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:25,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980701394] [2021-10-13 00:53:25,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:25,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731340053] [2021-10-13 00:53:25,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731340053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:53:25,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:53:25,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:53:25,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184678328] [2021-10-13 00:53:25,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:53:25,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:53:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:53:25,645 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-10-13 00:53:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:25,826 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-13 00:53:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:53:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 20 [2021-10-13 00:53:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:25,827 INFO L225 Difference]: With dead ends: 31 [2021-10-13 00:53:25,827 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:53:25,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:53:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:53:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:53:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:53:25,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-13 00:53:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:25,828 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:53:25,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-10-13 00:53:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:53:25,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:53:25,831 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:53:25,831 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:53:25,831 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:53:25,831 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:53:25,832 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:53:25,832 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:53:25,832 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:53:25,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-13 00:53:26,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:26,041 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:53:26,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:53:26 BoogieIcfgContainer [2021-10-13 00:53:26,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:53:26,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:53:26,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:53:26,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:53:26,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:53:16" (3/4) ... [2021-10-13 00:53:26,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:53:26,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-13 00:53:26,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-13 00:53:26,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-13 00:53:26,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-13 00:53:26,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-13 00:53:26,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-13 00:53:26,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-13 00:53:26,060 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 00:53:26,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:53:26,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 00:53:26,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:53:26,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:53:26,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:53:26,100 INFO L168 Benchmark]: Toolchain (without parser) took 10536.13 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 54.6 MB in the beginning and 69.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,101 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:53:26,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.44 ms. Allocated memory is still 92.3 MB. Free memory was 54.3 MB in the beginning and 61.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,102 INFO L168 Benchmark]: Boogie Preprocessor took 66.85 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 59.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,102 INFO L168 Benchmark]: RCFGBuilder took 647.10 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 40.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,103 INFO L168 Benchmark]: TraceAbstraction took 9183.06 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 40.6 MB in the beginning and 73.0 MB in the end (delta: -32.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,104 INFO L168 Benchmark]: Witness Printer took 55.03 ms. Allocated memory is still 138.4 MB. Free memory was 73.0 MB in the beginning and 69.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:26,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 573.44 ms. Allocated memory is still 92.3 MB. Free memory was 54.3 MB in the beginning and 61.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.85 ms. Allocated memory is still 92.3 MB. Free memory was 61.7 MB in the beginning and 59.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 647.10 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 40.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9183.06 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 40.6 MB in the beginning and 73.0 MB in the end (delta: -32.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.03 ms. Allocated memory is still 138.4 MB. Free memory was 73.0 MB in the beginning and 69.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9065.2ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 23.5ms, AutomataDifference: 1844.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 195 SDtfs, 274 SDslu, 241 SDs, 0 SdLazy, 300 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1129.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 840.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.5ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 2741.2ms InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 1346 SizeOfPredicates, 26 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:53:26,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84639fe-4756-4e47-94b1-8ba279d5529b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...