./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/ex3_forlist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:20:39,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:39,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:39,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:39,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:39,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:39,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:39,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:39,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:39,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:39,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:39,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:39,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:39,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:39,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:39,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:39,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:39,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:39,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:39,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:39,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:39,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:39,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:39,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:39,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:39,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:39,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:39,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:39,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:39,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:39,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:39,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:39,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:39,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:39,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:39,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:39,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:39,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:39,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:39,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:39,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:39,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-10-17 10:20:39,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:39,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:39,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:39,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:39,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:39,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:39,560 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:39,560 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:20:39,560 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:20:39,560 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:20:39,561 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:20:39,562 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:20:39,562 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:20:39,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:39,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:39,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:20:39,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:20:39,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:39,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:39,565 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:20:39,566 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:39,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:20:39,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:39,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:39,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:39,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:39,568 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:20:39,568 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fdb29d081e8788960943f1182fbfb10ca7dcdfe7c31b22aaab16bda45fd1b8 [2022-10-17 10:20:39,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:39,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:39,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:39,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:39,846 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:39,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-regression/ex3_forlist.i [2022-10-17 10:20:39,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/data/2801d806a/66e42436540041ababed06434aacf339/FLAG86786ca38 [2022-10-17 10:20:40,385 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:40,386 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/sv-benchmarks/c/ldv-regression/ex3_forlist.i [2022-10-17 10:20:40,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/data/2801d806a/66e42436540041ababed06434aacf339/FLAG86786ca38 [2022-10-17 10:20:40,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/data/2801d806a/66e42436540041ababed06434aacf339 [2022-10-17 10:20:40,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:40,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:40,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:40,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:40,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:40,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:40" (1/1) ... [2022-10-17 10:20:40,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d45567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:40, skipping insertion in model container [2022-10-17 10:20:40,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:40" (1/1) ... [2022-10-17 10:20:40,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:40,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:40,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2022-10-17 10:20:40,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:41,000 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:20:41,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/sv-benchmarks/c/ldv-regression/ex3_forlist.i[293,306] [2022-10-17 10:20:41,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:41,039 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:20:41,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41 WrapperNode [2022-10-17 10:20:41,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:41,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:41,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:20:41,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:20:41,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,098 INFO L138 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 138 [2022-10-17 10:20:41,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:41,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:20:41,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:20:41,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:20:41,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:20:41,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:20:41,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:20:41,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:20:41,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (1/1) ... [2022-10-17 10:20:41,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:41,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:41,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:20:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:20:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:20:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:20:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:20:41,277 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:20:41,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:20:41,728 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:20:41,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:20:41,749 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:20:41,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:41 BoogieIcfgContainer [2022-10-17 10:20:41,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:20:41,761 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:20:41,761 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:20:41,765 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:20:41,766 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:20:41,766 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:20:40" (1/3) ... [2022-10-17 10:20:41,767 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c987c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:20:41, skipping insertion in model container [2022-10-17 10:20:41,768 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:20:41,768 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:41" (2/3) ... [2022-10-17 10:20:41,768 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c987c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:20:41, skipping insertion in model container [2022-10-17 10:20:41,768 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:20:41,769 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:41" (3/3) ... [2022-10-17 10:20:41,770 INFO L332 chiAutomizerObserver]: Analyzing ICFG ex3_forlist.i [2022-10-17 10:20:41,824 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:20:41,825 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:20:41,825 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:20:41,825 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:20:41,825 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:20:41,825 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:20:41,825 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:20:41,825 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:20:41,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:41,847 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 22 [2022-10-17 10:20:41,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:20:41,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:20:41,853 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 10:20:41,853 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:20:41,853 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:20:41,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:41,857 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 22 [2022-10-17 10:20:41,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:20:41,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:20:41,858 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 10:20:41,858 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:20:41,865 INFO L748 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 35#L19-3true [2022-10-17 10:20:41,865 INFO L750 eck$LassoCheckResult]: Loop: 35#L19-3true assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 2#L19-2true init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 35#L19-3true [2022-10-17 10:20:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-10-17 10:20:41,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:41,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627820194] [2022-10-17 10:20:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:41,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:42,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2022-10-17 10:20:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:42,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544752227] [2022-10-17 10:20:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:42,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:42,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-17 10:20:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:42,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322140156] [2022-10-17 10:20:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:42,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:42,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:42,840 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:20:42,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:20:42,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:20:42,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:20:42,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:20:42,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:42,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:20:42,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:20:42,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: ex3_forlist.i_Iteration1_Lasso [2022-10-17 10:20:42,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:20:42,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:20:42,868 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:42,878 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:42,882 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:42,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,525 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,528 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,531 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,537 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,540 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,543 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,546 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,549 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,552 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,557 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:20:43,998 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:20:44,002 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:20:44,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:20:44,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:20:44,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:20:44,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:20:44,041 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-10-17 10:20:44,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:20:44,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:20:44,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:20:44,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:20:44,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-10-17 10:20:44,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:20:44,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,168 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,186 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,245 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,245 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:20:44,270 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:20:44,342 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:20:44,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,400 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,400 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:20:44,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,494 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:20:44,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,574 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:20:44,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,627 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,627 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,654 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:20:44,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,783 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:20:44,818 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:20:44,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,874 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,902 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:44,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:44,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:44,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:44,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:44,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:44,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:44,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:44,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:44,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:44,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:44,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:44,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:20:44,986 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:20:45,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-10-17 10:20:45,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:45,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:45,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:45,019 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:20:45,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:20:45,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:20:45,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:20:45,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:20:45,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:20:45,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:20:45,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:20:45,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:20:45,130 INFO L443 ModelExtractionUtils]: Simplification made 23 calls to the SMT solver. [2022-10-17 10:20:45,130 INFO L444 ModelExtractionUtils]: 0 out of 25 variables were initially zero. Simplification set additionally 22 variables to zero. [2022-10-17 10:20:45,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:20:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:45,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:45,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:20:45,183 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:20:45,204 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-10-17 10:20:45,204 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:20:45,204 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_init_~i~0#1) = -2*ULTIMATE.start_init_~i~0#1 + 3 Supporting invariants [] [2022-10-17 10:20:45,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:45,359 INFO L156 tatePredicateManager]: 21 out of 21 supporting invariants were superfluous and have been removed [2022-10-17 10:20:45,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:20:45,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:45,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:20:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:45,499 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:20:45,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,551 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 95 states and 138 transitions. Complement of second has 7 states. [2022-10-17 10:20:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:20:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2022-10-17 10:20:45,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 2 letters. Loop has 2 letters. [2022-10-17 10:20:45,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:20:45,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 4 letters. Loop has 2 letters. [2022-10-17 10:20:45,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:20:45,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 94 transitions. Stem has 2 letters. Loop has 4 letters. [2022-10-17 10:20:45,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:20:45,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 138 transitions. [2022-10-17 10:20:45,569 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:45,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 28 states and 37 transitions. [2022-10-17 10:20:45,573 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-10-17 10:20:45,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-10-17 10:20:45,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 37 transitions. [2022-10-17 10:20:45,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:45,575 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-10-17 10:20:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 37 transitions. [2022-10-17 10:20:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-17 10:20:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-10-17 10:20:45,602 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-10-17 10:20:45,602 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-10-17 10:20:45,602 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:20:45,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 37 transitions. [2022-10-17 10:20:45,608 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:45,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:20:45,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:20:45,609 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:45,610 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:20:45,610 INFO L748 eck$LassoCheckResult]: Stem: 273#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 259#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 260#L19-3 assume !(init_~i~0#1 < 2); 277#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 268#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 264#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 257#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 258#L27-3 [2022-10-17 10:20:45,611 INFO L750 eck$LassoCheckResult]: Loop: 258#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 279#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 263#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 258#L27-3 [2022-10-17 10:20:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1807951404, now seen corresponding path program 1 times [2022-10-17 10:20:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:45,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930690391] [2022-10-17 10:20:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:45,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930690391] [2022-10-17 10:20:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930690391] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:45,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:20:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927615103] [2022-10-17 10:20:45,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:20:45,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:45,784 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:20:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 1 times [2022-10-17 10:20:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:45,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910697862] [2022-10-17 10:20:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:45,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:45,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:20:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:20:45,864 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:45,884 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-10-17 10:20:45,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 37 transitions. [2022-10-17 10:20:45,887 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:45,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 37 transitions. [2022-10-17 10:20:45,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-10-17 10:20:45,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-10-17 10:20:45,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2022-10-17 10:20:45,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:45,896 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-10-17 10:20:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2022-10-17 10:20:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-10-17 10:20:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-10-17 10:20:45,903 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-10-17 10:20:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:20:45,905 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-10-17 10:20:45,905 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:20:45,905 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 36 transitions. [2022-10-17 10:20:45,909 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:45,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:20:45,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:20:45,910 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:45,910 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:20:45,910 INFO L748 eck$LassoCheckResult]: Stem: 336#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 322#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 323#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 315#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 316#L19-3 assume !(init_~i~0#1 < 2); 340#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 328#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 327#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 317#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 318#L27-3 [2022-10-17 10:20:45,911 INFO L750 eck$LassoCheckResult]: Loop: 318#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 342#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 326#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 318#L27-3 [2022-10-17 10:20:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash -369325334, now seen corresponding path program 1 times [2022-10-17 10:20:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:45,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22264949] [2022-10-17 10:20:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:46,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:46,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22264949] [2022-10-17 10:20:46,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22264949] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40753463] [2022-10-17 10:20:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:46,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:46,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-17 10:20:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:46,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:20:46,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:46,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:20:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:46,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40753463] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:20:46,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:20:46,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-10-17 10:20:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211317769] [2022-10-17 10:20:46,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:20:46,192 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:20:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 2 times [2022-10-17 10:20:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342878209] [2022-10-17 10:20:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:46,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:20:46,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:20:46,279 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:20:46,315 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-10-17 10:20:46,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2022-10-17 10:20:46,321 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:46,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 38 transitions. [2022-10-17 10:20:46,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-10-17 10:20:46,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-10-17 10:20:46,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 38 transitions. [2022-10-17 10:20:46,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:46,324 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-10-17 10:20:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 38 transitions. [2022-10-17 10:20:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-10-17 10:20:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-10-17 10:20:46,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-10-17 10:20:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:20:46,335 INFO L428 stractBuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-10-17 10:20:46,335 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:20:46,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 38 transitions. [2022-10-17 10:20:46,336 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2022-10-17 10:20:46,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:20:46,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:20:46,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:20:46,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:20:46,338 INFO L748 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 436#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 437#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 429#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 430#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 457#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 458#L19-3 assume !(init_~i~0#1 < 2); 454#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 442#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 441#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 431#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 432#L27-3 [2022-10-17 10:20:46,338 INFO L750 eck$LassoCheckResult]: Loop: 432#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 456#L28 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 440#L27-2 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 432#L27-3 [2022-10-17 10:20:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1083197400, now seen corresponding path program 2 times [2022-10-17 10:20:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307092079] [2022-10-17 10:20:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash 62722, now seen corresponding path program 3 times [2022-10-17 10:20:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700944760] [2022-10-17 10:20:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:20:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:20:46,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:20:46,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1444415621, now seen corresponding path program 1 times [2022-10-17 10:20:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128870245] [2022-10-17 10:20:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128870245] [2022-10-17 10:20:47,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128870245] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:20:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472982298] [2022-10-17 10:20:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:47,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:20:47,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:47,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:20:47,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511699dd-4ca2-4666-98b2-b6591425616a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-17 10:20:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:47,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 10:20:47,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:20:47,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-17 10:20:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-17 10:20:47,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-17 10:20:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-17 10:20:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-17 10:20:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-17 10:20:47,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 10:20:47,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:20:47,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 10:20:47,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:20:47,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:20:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:20:47,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:20:47,740 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_~#pp~0.offset| (* 4 |c_ULTIMATE.start_init_~i~0#1|)))) (and (forall ((v_ArrVal_187 Int) (v_ArrVal_188 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) .cse0 v_ArrVal_187)) |c_~#pstate~0.base| v_ArrVal_188) |c_~#pp~0.base|) |c_~#pp~0.offset|))) (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_183 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) .cse0 v_ArrVal_183)) |c_~#pstate~0.base| v_ArrVal_186) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)))) is different from false [2022-10-17 10:20:47,799 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_init_~i~0#1| 1))) (and (forall ((|v_ULTIMATE.start_init_~i~0#1_113| Int)) (or (forall ((v_ArrVal_187 Int) (v_ArrVal_188 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|) (+ |c_~#pp~0.offset| (* |v_ULTIMATE.start_init_~i~0#1_113| 4)) v_ArrVal_187)) |c_~#pstate~0.base| v_ArrVal_188) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)) (not (<= .cse0 |v_ULTIMATE.start_init_~i~0#1_113|)))) (forall ((|v_ULTIMATE.start_init_~i~0#1_113| Int)) (or (not (<= .cse0 |v_ULTIMATE.start_init_~i~0#1_113|)) (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_183 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|) (+ |c_~#pp~0.offset| (* |v_ULTIMATE.start_init_~i~0#1_113| 4)) v_ArrVal_183)) |c_~#pstate~0.base| v_ArrVal_186) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)))))) is different from false [2022-10-17 10:20:47,832 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:20:47,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2022-10-17 10:20:47,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2022-10-17 10:20:47,852 INFO L390 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 41 treesize of output 39 [2022-10-17 10:20:47,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:20:47,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 55 [2022-10-17 10:20:47,880 INFO L390 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 80 treesize of output 76 [2022-10-17 10:20:47,935 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 10:20:47,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 1 [2022-10-17 10:20:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-10-17 10:20:47,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472982298] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:20:47,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:20:47,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-10-17 10:20:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796491991] [2022-10-17 10:20:47,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:20:48,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 10:20:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=294, Unknown=2, NotChecked=74, Total=462 [2022-10-17 10:20:48,033 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. cyclomatic complexity: 13 Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:00,134 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_~#pp~0.offset| (* 4 |c_ULTIMATE.start_init_~i~0#1|))) (.cse2 (select |c_#memory_$Pointer$.offset| |c_~#pp~0.base|)) (.cse3 (+ |c_ULTIMATE.start_init_~i~0#1| 1)) (.cse0 (select |c_#memory_$Pointer$.base| |c_~#pp~0.base|))) (and (= |c_~#pp~0.offset| 0) (= 0 (select .cse0 .cse1)) (= |c_ULTIMATE.start_init_~i~0#1| 0) (<= |c_~#pp~0.base| 4) (= (select .cse2 .cse1) 0) (<= 5 |c_~#pstate~0.base|) (forall ((|v_ULTIMATE.start_init_~i~0#1_113| Int)) (or (forall ((v_ArrVal_187 Int) (v_ArrVal_188 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_~#pp~0.base| (store .cse2 (+ |c_~#pp~0.offset| (* |v_ULTIMATE.start_init_~i~0#1_113| 4)) v_ArrVal_187)) |c_~#pstate~0.base| v_ArrVal_188) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)) (not (<= .cse3 |v_ULTIMATE.start_init_~i~0#1_113|)))) (forall ((|v_ULTIMATE.start_init_~i~0#1_113| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_init_~i~0#1_113|)) (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_183 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_~#pp~0.base| (store .cse0 (+ |c_~#pp~0.offset| (* |v_ULTIMATE.start_init_~i~0#1_113| 4)) v_ArrVal_183)) |c_~#pstate~0.base| v_ArrVal_186) |c_~#pp~0.base|) |c_~#pp~0.offset|) 0)))))) is different from false [2022-10-17 10:21:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:00,323 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-10-17 10:21:00,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2022-10-17 10:21:00,323 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2022-10-17 10:21:00,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2022-10-17 10:21:00,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-10-17 10:21:00,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-10-17 10:21:00,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2022-10-17 10:21:00,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:00,325 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-10-17 10:21:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2022-10-17 10:21:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 10:21:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-10-17 10:21:00,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-10-17 10:21:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:21:00,328 INFO L428 stractBuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-10-17 10:21:00,328 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 10:21:00,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2022-10-17 10:21:00,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2022-10-17 10:21:00,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:21:00,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:21:00,330 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:00,330 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:21:00,330 INFO L748 eck$LassoCheckResult]: Stem: 622#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3);~#pp~0.base, ~#pp~0.offset := 4, 0;call #Ultimate.allocInit(8, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset, 4);call write~init~$Pointer$(0, 0, ~#pp~0.base, 4 + ~#pp~0.offset, 4);~#pstate~0.base, ~#pstate~0.offset := 5, 0;call #Ultimate.allocInit(8, 5);call write~init~int(0, ~#pstate~0.base, ~#pstate~0.offset, 4);call write~init~int(0, ~#pstate~0.base, 4 + ~#pstate~0.offset, 4);~counter~0 := 1; 611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset, main_#t~ret12#1.base, main_#t~ret12#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset;havoc main_~a~0#1.base, main_~a~0#1.offset;havoc main_~b~0#1.base, main_~b~0#1.offset;assume { :begin_inline_init } true;havoc init_#t~post4#1, init_~i~0#1;havoc init_~i~0#1;init_~i~0#1 := 0; 612#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 602#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 603#L19-3 assume !!(init_~i~0#1 < 2);call write~$Pointer$(0, 0, ~#pp~0.base, ~#pp~0.offset + 4 * init_~i~0#1, 4);call write~int(0, ~#pstate~0.base, ~#pstate~0.offset + 4 * init_~i~0#1, 4); 629#L19-2 init_#t~post4#1 := init_~i~0#1;init_~i~0#1 := 1 + init_#t~post4#1;havoc init_#t~post4#1; 630#L19-3 assume !(init_~i~0#1 < 2); 626#L17 assume { :end_inline_init } true;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 614#L49 main_#t~ret11#1.base, main_#t~ret11#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~a~0#1.base, main_~a~0#1.offset := main_#t~ret11#1.base, main_#t~ret11#1.offset;havoc main_#t~ret11#1.base, main_#t~ret11#1.offset;assume { :begin_inline_malloc } true;malloc_#in~size#1 := 4;havoc malloc_#res#1.base, malloc_#res#1.offset;havoc malloc_#t~post10#1, malloc_~size#1;malloc_~size#1 := malloc_#in~size#1;malloc_#t~post10#1 := ~counter~0;~counter~0 := 1 + malloc_#t~post10#1;malloc_#res#1.base, malloc_#res#1.offset := 0, malloc_#t~post10#1;havoc malloc_#t~post10#1; 613#L49-1 main_#t~ret12#1.base, main_#t~ret12#1.offset := malloc_#res#1.base, malloc_#res#1.offset;assume { :end_inline_malloc } true;main_~b~0#1.base, main_~b~0#1.offset := main_#t~ret12#1.base, main_#t~ret12#1.offset;havoc main_#t~ret12#1.base, main_#t~ret12#1.offset; 604#L59 assume !((main_~a~0#1.base == 0 && main_~a~0#1.offset == 0) || (main_~b~0#1.base == 0 && main_~b~0#1.offset == 0));assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~a~0#1.base, main_~a~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 605#L27-3 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 628#L28 assume f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset;call write~$Pointer$(f_~pointer#1.base, f_~pointer#1.offset, ~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4);call write~int(1, ~#pstate~0.base, ~#pstate~0.offset + 4 * f_~i~1#1, 4); 624#L25 assume { :end_inline_f } true;assume { :begin_inline_f } true;f_#in~pointer#1.base, f_#in~pointer#1.offset := main_~b~0#1.base, main_~b~0#1.offset;havoc f_#t~mem6#1.base, f_#t~mem6#1.offset, f_#t~post5#1, f_~pointer#1.base, f_~pointer#1.offset, f_~i~1#1;f_~pointer#1.base, f_~pointer#1.offset := f_#in~pointer#1.base, f_#in~pointer#1.offset;havoc f_~i~1#1;f_~i~1#1 := 0; 623#L27-7 [2022-10-17 10:21:00,330 INFO L750 eck$LassoCheckResult]: Loop: 623#L27-7 assume !!(f_~i~1#1 < 2);call f_#t~mem6#1.base, f_#t~mem6#1.offset := read~$Pointer$(~#pp~0.base, ~#pp~0.offset + 4 * f_~i~1#1, 4); 615#L28-1 assume !(f_#t~mem6#1.base == 0 && f_#t~mem6#1.offset == 0);havoc f_#t~mem6#1.base, f_#t~mem6#1.offset; 617#L27-6 f_#t~post5#1 := f_~i~1#1;f_~i~1#1 := 1 + f_#t~post5#1;havoc f_#t~post5#1; 623#L27-7 [2022-10-17 10:21:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1444415679, now seen corresponding path program 1 times [2022-10-17 10:21:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:00,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401331821] [2022-10-17 10:21:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:21:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:21:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 81589, now seen corresponding path program 1 times [2022-10-17 10:21:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344656802] [2022-10-17 10:21:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:21:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:21:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash 689897333, now seen corresponding path program 1 times [2022-10-17 10:21:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622487105] [2022-10-17 10:21:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:21:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:00,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace