./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer --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 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:13:49,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:13:49,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:13:49,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:13:49,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:13:49,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:13:49,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:13:49,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:13:49,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:13:49,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:13:49,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:13:49,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:13:49,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:49,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:49,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:49,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:49,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:49,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:49,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:49,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:49,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:49,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:49,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:49,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:49,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:49,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:49,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:49,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:49,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:49,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:49,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:49,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:49,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:49,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:49,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:49,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:49,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:49,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:49,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:49,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:49,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:49,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:13:49,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:49,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:49,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:49,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:49,744 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:49,744 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:13:49,744 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:13:49,744 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:13:49,745 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:13:49,745 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:13:49,746 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:13:49,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:49,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:13:49,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:13:49,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:13:49,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:13:49,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:49,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:13:49,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:13:49,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:13:49,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:13:49,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:49,748 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:13:49,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:49,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:13:49,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:49,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:49,749 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:13:49,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:49,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:13:49,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:49,750 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:13:49,752 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:13:49,752 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-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2020-11-30 01:13:50,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:50,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:50,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:50,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:50,056 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:50,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-30 01:13:50,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/data/00e0b2a55/7040993d4c4c45e9b587774c4935faf9/FLAGe84783da7 [2020-11-30 01:13:50,616 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:50,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-30 01:13:50,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/data/00e0b2a55/7040993d4c4c45e9b587774c4935faf9/FLAGe84783da7 [2020-11-30 01:13:50,964 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/data/00e0b2a55/7040993d4c4c45e9b587774c4935faf9 [2020-11-30 01:13:50,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:50,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:50,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:50,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:50,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:50,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:50" (1/1) ... [2020-11-30 01:13:50,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c594dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:50, skipping insertion in model container [2020-11-30 01:13:50,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:50" (1/1) ... [2020-11-30 01:13:50,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:51,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:51,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:51,303 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:51,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:51,345 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:51,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51 WrapperNode [2020-11-30 01:13:51,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:51,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:51,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:51,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:51,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:51,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:51,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:51,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:51,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... [2020-11-30 01:13:51,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:51,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:51,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:51,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:51,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:13:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:52,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:52,231 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 01:13:52,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:52 BoogieIcfgContainer [2020-11-30 01:13:52,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:52,235 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:13:52,235 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:13:52,239 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:13:52,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:52,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:13:50" (1/3) ... [2020-11-30 01:13:52,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e41658a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:52, skipping insertion in model container [2020-11-30 01:13:52,242 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:52,242 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:51" (2/3) ... [2020-11-30 01:13:52,243 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e41658a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:52, skipping insertion in model container [2020-11-30 01:13:52,243 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:52,244 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:52" (3/3) ... [2020-11-30 01:13:52,247 INFO L373 chiAutomizerObserver]: Analyzing ICFG test_locks_14-2.c [2020-11-30 01:13:52,312 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:13:52,312 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:13:52,313 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:13:52,313 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:52,313 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:52,313 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:13:52,313 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:52,314 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:13:52,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2020-11-30 01:13:52,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2020-11-30 01:13:52,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:52,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:52,368 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:52,368 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:52,368 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:13:52,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2020-11-30 01:13:52,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2020-11-30 01:13:52,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:52,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:52,380 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:52,380 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:52,387 INFO L794 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 48#L211true [2020-11-30 01:13:52,388 INFO L796 eck$LassoCheckResult]: Loop: 48#L211true assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 29#L55true assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 30#L88true assume 0 != main_~p1~0;main_~lk1~0 := 1; 27#L88-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 18#L92-1true assume !(0 != main_~p3~0); 36#L96-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 42#L100-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 34#L104-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 51#L108-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 44#L112-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 49#L116-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 13#L120-1true assume 0 != main_~p10~0;main_~lk10~0 := 1; 4#L124-1true assume !(0 != main_~p11~0); 24#L128-1true assume 0 != main_~p12~0;main_~lk12~0 := 1; 31#L132-1true assume 0 != main_~p13~0;main_~lk13~0 := 1; 21#L136-1true assume 0 != main_~p14~0;main_~lk14~0 := 1; 38#L140-1true assume !(0 != main_~p1~0); 5#L146-1true assume 0 != main_~p2~0; 53#L152true assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 39#L151true assume !(0 != main_~p3~0); 46#L156-1true assume !(0 != main_~p4~0); 26#L161-1true assume !(0 != main_~p5~0); 32#L166-1true assume !(0 != main_~p6~0); 10#L171-1true assume !(0 != main_~p7~0); 17#L176-1true assume !(0 != main_~p8~0); 35#L181-1true assume !(0 != main_~p9~0); 16#L186-1true assume !(0 != main_~p10~0); 23#L191-1true assume !(0 != main_~p11~0); 54#L196-1true assume !(0 != main_~p12~0); 7#L201-1true assume !(0 != main_~p13~0); 41#L206-1true assume 0 != main_~p14~0; 8#L212true assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 48#L211true [2020-11-30 01:13:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-30 01:13:52,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:52,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390492101] [2020-11-30 01:13:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:52,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:52,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:52,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1237702727, now seen corresponding path program 1 times [2020-11-30 01:13:52,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:52,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112847264] [2020-11-30 01:13:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:52,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112847264] [2020-11-30 01:13:52,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:52,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:52,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076278880] [2020-11-30 01:13:52,740 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:52,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:52,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:52,760 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-30 01:13:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:52,814 INFO L93 Difference]: Finished difference Result 99 states and 178 transitions. [2020-11-30 01:13:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:52,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 178 transitions. [2020-11-30 01:13:52,824 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2020-11-30 01:13:52,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 139 transitions. [2020-11-30 01:13:52,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2020-11-30 01:13:52,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2020-11-30 01:13:52,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 139 transitions. [2020-11-30 01:13:52,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:52,840 INFO L691 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2020-11-30 01:13:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 139 transitions. [2020-11-30 01:13:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-11-30 01:13:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 01:13:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2020-11-30 01:13:52,884 INFO L714 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2020-11-30 01:13:52,884 INFO L594 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2020-11-30 01:13:52,884 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:13:52,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 139 transitions. [2020-11-30 01:13:52,889 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2020-11-30 01:13:52,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:52,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:52,890 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:52,890 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:52,891 INFO L794 eck$LassoCheckResult]: Stem: 205#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 183#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 184#L211 [2020-11-30 01:13:52,891 INFO L796 eck$LassoCheckResult]: Loop: 184#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 208#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 209#L88 assume !(0 != main_~p1~0); 211#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 248#L92-1 assume !(0 != main_~p3~0); 247#L96-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 246#L100-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 245#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 244#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 197#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 198#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 243#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 242#L124-1 assume !(0 != main_~p11~0); 241#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 240#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 239#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 238#L140-1 assume !(0 != main_~p1~0); 237#L146-1 assume 0 != main_~p2~0; 236#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 235#L151 assume !(0 != main_~p3~0); 233#L156-1 assume !(0 != main_~p4~0); 231#L161-1 assume !(0 != main_~p5~0); 229#L166-1 assume !(0 != main_~p6~0); 226#L171-1 assume !(0 != main_~p7~0); 225#L176-1 assume !(0 != main_~p8~0); 223#L181-1 assume !(0 != main_~p9~0); 220#L186-1 assume !(0 != main_~p10~0); 219#L191-1 assume !(0 != main_~p11~0); 217#L196-1 assume !(0 != main_~p12~0); 215#L201-1 assume !(0 != main_~p13~0); 213#L206-1 assume 0 != main_~p14~0; 212#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 184#L211 [2020-11-30 01:13:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:52,891 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-11-30 01:13:52,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:52,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876914613] [2020-11-30 01:13:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:52,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:52,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:52,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:52,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1215070473, now seen corresponding path program 1 times [2020-11-30 01:13:52,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:52,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622813770] [2020-11-30 01:13:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:52,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622813770] [2020-11-30 01:13:52,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:52,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:52,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106932687] [2020-11-30 01:13:52,996 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:52,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:52,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:52,999 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. cyclomatic complexity: 52 Second operand 3 states. [2020-11-30 01:13:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,039 INFO L93 Difference]: Finished difference Result 174 states and 270 transitions. [2020-11-30 01:13:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:53,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 270 transitions. [2020-11-30 01:13:53,044 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2020-11-30 01:13:53,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 270 transitions. [2020-11-30 01:13:53,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2020-11-30 01:13:53,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2020-11-30 01:13:53,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 270 transitions. [2020-11-30 01:13:53,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:53,050 INFO L691 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-11-30 01:13:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 270 transitions. [2020-11-30 01:13:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-30 01:13:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-30 01:13:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2020-11-30 01:13:53,078 INFO L714 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-11-30 01:13:53,078 INFO L594 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-11-30 01:13:53,079 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:13:53,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 270 transitions. [2020-11-30 01:13:53,084 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2020-11-30 01:13:53,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:53,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:53,091 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:53,093 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:53,093 INFO L794 eck$LassoCheckResult]: Stem: 477#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 452#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 453#L211 [2020-11-30 01:13:53,094 INFO L796 eck$LassoCheckResult]: Loop: 453#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 479#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 480#L88 assume !(0 != main_~p1~0); 520#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 517#L92-1 assume !(0 != main_~p3~0); 518#L96-1 assume !(0 != main_~p4~0); 568#L100-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 580#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 577#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 521#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 519#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 516#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 513#L124-1 assume !(0 != main_~p11~0); 510#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 507#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 503#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 504#L140-1 assume !(0 != main_~p1~0); 553#L146-1 assume 0 != main_~p2~0; 602#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 600#L151 assume !(0 != main_~p3~0); 597#L156-1 assume !(0 != main_~p4~0); 595#L161-1 assume !(0 != main_~p5~0); 592#L166-1 assume !(0 != main_~p6~0); 511#L171-1 assume !(0 != main_~p7~0); 509#L176-1 assume !(0 != main_~p8~0); 506#L181-1 assume !(0 != main_~p9~0); 499#L186-1 assume !(0 != main_~p10~0); 500#L191-1 assume !(0 != main_~p11~0); 495#L196-1 assume !(0 != main_~p12~0); 493#L201-1 assume !(0 != main_~p13~0); 492#L206-1 assume 0 != main_~p14~0; 488#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 453#L211 [2020-11-30 01:13:53,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,096 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2020-11-30 01:13:53,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873885506] [2020-11-30 01:13:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:53,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,152 INFO L82 PathProgramCache]: Analyzing trace with hash 708157561, now seen corresponding path program 1 times [2020-11-30 01:13:53,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997267194] [2020-11-30 01:13:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997267194] [2020-11-30 01:13:53,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:53,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:53,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720778770] [2020-11-30 01:13:53,205 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:53,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:53,206 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. cyclomatic complexity: 100 Second operand 3 states. [2020-11-30 01:13:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,261 INFO L93 Difference]: Finished difference Result 342 states and 526 transitions. [2020-11-30 01:13:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:53,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 526 transitions. [2020-11-30 01:13:53,266 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2020-11-30 01:13:53,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 526 transitions. [2020-11-30 01:13:53,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2020-11-30 01:13:53,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2020-11-30 01:13:53,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 526 transitions. [2020-11-30 01:13:53,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:53,286 INFO L691 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2020-11-30 01:13:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 526 transitions. [2020-11-30 01:13:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-11-30 01:13:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-11-30 01:13:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 526 transitions. [2020-11-30 01:13:53,322 INFO L714 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2020-11-30 01:13:53,322 INFO L594 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2020-11-30 01:13:53,322 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:13:53,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 526 transitions. [2020-11-30 01:13:53,325 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2020-11-30 01:13:53,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:53,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:53,326 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:53,326 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:53,327 INFO L794 eck$LassoCheckResult]: Stem: 1003#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 974#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 975#L211 [2020-11-30 01:13:53,327 INFO L796 eck$LassoCheckResult]: Loop: 975#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 1101#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 1098#L88 assume !(0 != main_~p1~0); 1096#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 1094#L92-1 assume !(0 != main_~p3~0); 1092#L96-1 assume !(0 != main_~p4~0); 1088#L100-1 assume !(0 != main_~p5~0); 1086#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1084#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1082#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1080#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1078#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 1076#L124-1 assume !(0 != main_~p11~0); 1074#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 1072#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 1070#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 1067#L140-1 assume !(0 != main_~p1~0); 1065#L146-1 assume 0 != main_~p2~0; 1063#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 1060#L151 assume !(0 != main_~p3~0); 1056#L156-1 assume !(0 != main_~p4~0); 1057#L161-1 assume !(0 != main_~p5~0); 1137#L166-1 assume !(0 != main_~p6~0); 1132#L171-1 assume !(0 != main_~p7~0); 1129#L176-1 assume !(0 != main_~p8~0); 1125#L181-1 assume !(0 != main_~p9~0); 1120#L186-1 assume !(0 != main_~p10~0); 1117#L191-1 assume !(0 != main_~p11~0); 1113#L196-1 assume !(0 != main_~p12~0); 1109#L201-1 assume !(0 != main_~p13~0); 1106#L206-1 assume 0 != main_~p14~0; 1104#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 975#L211 [2020-11-30 01:13:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2020-11-30 01:13:53,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999089841] [2020-11-30 01:13:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,354 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash 770197175, now seen corresponding path program 1 times [2020-11-30 01:13:53,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905363059] [2020-11-30 01:13:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905363059] [2020-11-30 01:13:53,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:53,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:53,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142649033] [2020-11-30 01:13:53,418 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:53,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:53,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:53,419 INFO L87 Difference]: Start difference. First operand 342 states and 526 transitions. cyclomatic complexity: 192 Second operand 3 states. [2020-11-30 01:13:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,473 INFO L93 Difference]: Finished difference Result 674 states and 1026 transitions. [2020-11-30 01:13:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:53,475 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1026 transitions. [2020-11-30 01:13:53,485 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2020-11-30 01:13:53,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1026 transitions. [2020-11-30 01:13:53,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2020-11-30 01:13:53,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2020-11-30 01:13:53,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1026 transitions. [2020-11-30 01:13:53,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:53,497 INFO L691 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2020-11-30 01:13:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1026 transitions. [2020-11-30 01:13:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2020-11-30 01:13:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-11-30 01:13:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1026 transitions. [2020-11-30 01:13:53,534 INFO L714 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2020-11-30 01:13:53,534 INFO L594 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2020-11-30 01:13:53,534 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:13:53,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1026 transitions. [2020-11-30 01:13:53,540 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2020-11-30 01:13:53,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:53,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:53,542 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:53,543 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:53,547 INFO L794 eck$LassoCheckResult]: Stem: 2031#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1995#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 1996#L211 [2020-11-30 01:13:53,547 INFO L796 eck$LassoCheckResult]: Loop: 1996#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 2281#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 2279#L88 assume !(0 != main_~p1~0); 2277#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 2063#L92-1 assume !(0 != main_~p3~0); 2064#L96-1 assume !(0 != main_~p4~0); 2263#L100-1 assume !(0 != main_~p5~0); 2264#L104-1 assume !(0 != main_~p6~0); 2381#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2379#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2378#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 2311#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 2310#L124-1 assume !(0 != main_~p11~0); 2304#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 2300#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 2295#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 2290#L140-1 assume !(0 != main_~p1~0); 2286#L146-1 assume 0 != main_~p2~0; 2283#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 2215#L151 assume !(0 != main_~p3~0); 2214#L156-1 assume !(0 != main_~p4~0); 2219#L161-1 assume !(0 != main_~p5~0); 2334#L166-1 assume !(0 != main_~p6~0); 2330#L171-1 assume !(0 != main_~p7~0); 2327#L176-1 assume !(0 != main_~p8~0); 2323#L181-1 assume !(0 != main_~p9~0); 2316#L186-1 assume !(0 != main_~p10~0); 2308#L191-1 assume !(0 != main_~p11~0); 2303#L196-1 assume !(0 != main_~p12~0); 2298#L201-1 assume !(0 != main_~p13~0); 2293#L206-1 assume 0 != main_~p14~0; 2288#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 1996#L211 [2020-11-30 01:13:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2020-11-30 01:13:53,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357012106] [2020-11-30 01:13:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,593 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 910745785, now seen corresponding path program 1 times [2020-11-30 01:13:53,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454090224] [2020-11-30 01:13:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454090224] [2020-11-30 01:13:53,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:53,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:53,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085210728] [2020-11-30 01:13:53,649 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:53,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:53,650 INFO L87 Difference]: Start difference. First operand 674 states and 1026 transitions. cyclomatic complexity: 368 Second operand 3 states. [2020-11-30 01:13:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,677 INFO L93 Difference]: Finished difference Result 1330 states and 2002 transitions. [2020-11-30 01:13:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:53,678 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2002 transitions. [2020-11-30 01:13:53,696 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2020-11-30 01:13:53,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2002 transitions. [2020-11-30 01:13:53,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2020-11-30 01:13:53,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2020-11-30 01:13:53,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2002 transitions. [2020-11-30 01:13:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:53,716 INFO L691 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2020-11-30 01:13:53,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2002 transitions. [2020-11-30 01:13:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2020-11-30 01:13:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-11-30 01:13:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2002 transitions. [2020-11-30 01:13:53,751 INFO L714 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2020-11-30 01:13:53,751 INFO L594 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2020-11-30 01:13:53,752 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:13:53,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2002 transitions. [2020-11-30 01:13:53,761 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2020-11-30 01:13:53,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:53,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:53,763 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:53,763 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:53,763 INFO L794 eck$LassoCheckResult]: Stem: 4036#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4005#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 4006#L211 [2020-11-30 01:13:53,764 INFO L796 eck$LassoCheckResult]: Loop: 4006#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 4524#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 4522#L88 assume !(0 != main_~p1~0); 4520#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 4517#L92-1 assume !(0 != main_~p3~0); 4514#L96-1 assume !(0 != main_~p4~0); 4512#L100-1 assume !(0 != main_~p5~0); 4510#L104-1 assume !(0 != main_~p6~0); 4487#L108-1 assume !(0 != main_~p7~0); 4482#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 4483#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 4466#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 4467#L124-1 assume !(0 != main_~p11~0); 4446#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 4438#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 4418#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 4419#L140-1 assume !(0 != main_~p1~0); 4608#L146-1 assume 0 != main_~p2~0; 4603#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 4599#L151 assume !(0 != main_~p3~0); 4592#L156-1 assume !(0 != main_~p4~0); 4587#L161-1 assume !(0 != main_~p5~0); 4577#L166-1 assume !(0 != main_~p6~0); 4576#L171-1 assume !(0 != main_~p7~0); 4565#L176-1 assume !(0 != main_~p8~0); 4560#L181-1 assume !(0 != main_~p9~0); 4554#L186-1 assume !(0 != main_~p10~0); 4551#L191-1 assume !(0 != main_~p11~0); 4547#L196-1 assume !(0 != main_~p12~0); 4541#L201-1 assume !(0 != main_~p13~0); 4536#L206-1 assume 0 != main_~p14~0; 4532#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 4006#L211 [2020-11-30 01:13:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2020-11-30 01:13:53,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825171132] [2020-11-30 01:13:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:53,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:53,801 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash 776732279, now seen corresponding path program 1 times [2020-11-30 01:13:53,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:53,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179134148] [2020-11-30 01:13:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179134148] [2020-11-30 01:13:53,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:53,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:53,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360013898] [2020-11-30 01:13:53,840 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:53,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:53,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:53,841 INFO L87 Difference]: Start difference. First operand 1330 states and 2002 transitions. cyclomatic complexity: 704 Second operand 3 states. [2020-11-30 01:13:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,903 INFO L93 Difference]: Finished difference Result 2626 states and 3906 transitions. [2020-11-30 01:13:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:53,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 3906 transitions. [2020-11-30 01:13:53,942 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2020-11-30 01:13:53,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 3906 transitions. [2020-11-30 01:13:53,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2020-11-30 01:13:53,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2020-11-30 01:13:53,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 3906 transitions. [2020-11-30 01:13:53,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:53,973 INFO L691 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2020-11-30 01:13:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 3906 transitions. [2020-11-30 01:13:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2020-11-30 01:13:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-11-30 01:13:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3906 transitions. [2020-11-30 01:13:54,036 INFO L714 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2020-11-30 01:13:54,036 INFO L594 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2020-11-30 01:13:54,036 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:13:54,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 3906 transitions. [2020-11-30 01:13:54,057 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2020-11-30 01:13:54,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:54,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:54,061 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:54,061 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:54,061 INFO L794 eck$LassoCheckResult]: Stem: 8001#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7967#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 7968#L211 [2020-11-30 01:13:54,062 INFO L796 eck$LassoCheckResult]: Loop: 7968#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 8349#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 8346#L88 assume !(0 != main_~p1~0); 8343#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 8341#L92-1 assume !(0 != main_~p3~0); 8338#L96-1 assume !(0 != main_~p4~0); 8335#L100-1 assume !(0 != main_~p5~0); 8284#L104-1 assume !(0 != main_~p6~0); 8279#L108-1 assume !(0 != main_~p7~0); 8277#L112-1 assume !(0 != main_~p8~0); 8275#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 8273#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 8271#L124-1 assume !(0 != main_~p11~0); 8268#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 8266#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 8264#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 8259#L140-1 assume !(0 != main_~p1~0); 8257#L146-1 assume 0 != main_~p2~0; 8255#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 8201#L151 assume !(0 != main_~p3~0); 8190#L156-1 assume !(0 != main_~p4~0); 8192#L161-1 assume !(0 != main_~p5~0); 8377#L166-1 assume !(0 != main_~p6~0); 8376#L171-1 assume !(0 != main_~p7~0); 8374#L176-1 assume !(0 != main_~p8~0); 8373#L181-1 assume !(0 != main_~p9~0); 8369#L186-1 assume !(0 != main_~p10~0); 8366#L191-1 assume !(0 != main_~p11~0); 8362#L196-1 assume !(0 != main_~p12~0); 8358#L201-1 assume !(0 != main_~p13~0); 8354#L206-1 assume 0 != main_~p14~0; 8352#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 7968#L211 [2020-11-30 01:13:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2020-11-30 01:13:54,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:54,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089516368] [2020-11-30 01:13:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:54,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:54,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:54,104 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1028706055, now seen corresponding path program 1 times [2020-11-30 01:13:54,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:54,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195069978] [2020-11-30 01:13:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:54,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195069978] [2020-11-30 01:13:54,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:54,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123210679] [2020-11-30 01:13:54,144 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:54,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:54,146 INFO L87 Difference]: Start difference. First operand 2626 states and 3906 transitions. cyclomatic complexity: 1344 Second operand 3 states. [2020-11-30 01:13:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:54,196 INFO L93 Difference]: Finished difference Result 5186 states and 7618 transitions. [2020-11-30 01:13:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:54,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7618 transitions. [2020-11-30 01:13:54,289 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2020-11-30 01:13:54,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7618 transitions. [2020-11-30 01:13:54,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2020-11-30 01:13:54,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2020-11-30 01:13:54,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7618 transitions. [2020-11-30 01:13:54,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:54,352 INFO L691 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2020-11-30 01:13:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7618 transitions. [2020-11-30 01:13:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2020-11-30 01:13:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2020-11-30 01:13:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7618 transitions. [2020-11-30 01:13:54,487 INFO L714 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2020-11-30 01:13:54,487 INFO L594 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2020-11-30 01:13:54,487 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 01:13:54,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7618 transitions. [2020-11-30 01:13:54,556 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2020-11-30 01:13:54,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:54,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:54,557 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:54,557 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:54,557 INFO L794 eck$LassoCheckResult]: Stem: 15816#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 15784#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 15785#L211 [2020-11-30 01:13:54,559 INFO L796 eck$LassoCheckResult]: Loop: 15785#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 16140#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 16137#L88 assume !(0 != main_~p1~0); 16132#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 16128#L92-1 assume !(0 != main_~p3~0); 16121#L96-1 assume !(0 != main_~p4~0); 16114#L100-1 assume !(0 != main_~p5~0); 16115#L104-1 assume !(0 != main_~p6~0); 16092#L108-1 assume !(0 != main_~p7~0); 16089#L112-1 assume !(0 != main_~p8~0); 16087#L116-1 assume !(0 != main_~p9~0); 16085#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 16082#L124-1 assume !(0 != main_~p11~0); 16078#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 16074#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 16069#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 16036#L140-1 assume !(0 != main_~p1~0); 16030#L146-1 assume 0 != main_~p2~0; 16024#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 16020#L151 assume !(0 != main_~p3~0); 16013#L156-1 assume !(0 != main_~p4~0); 16015#L161-1 assume !(0 != main_~p5~0); 16168#L166-1 assume !(0 != main_~p6~0); 16164#L171-1 assume !(0 != main_~p7~0); 16160#L176-1 assume !(0 != main_~p8~0); 16158#L181-1 assume !(0 != main_~p9~0); 16156#L186-1 assume !(0 != main_~p10~0); 16154#L191-1 assume !(0 != main_~p11~0); 16152#L196-1 assume !(0 != main_~p12~0); 16149#L201-1 assume !(0 != main_~p13~0); 16145#L206-1 assume 0 != main_~p14~0; 16143#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 15785#L211 [2020-11-30 01:13:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:54,560 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2020-11-30 01:13:54,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:54,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381977449] [2020-11-30 01:13:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:54,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:54,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:54,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -809851337, now seen corresponding path program 1 times [2020-11-30 01:13:54,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:54,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086442416] [2020-11-30 01:13:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:54,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086442416] [2020-11-30 01:13:54,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:54,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:54,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248747346] [2020-11-30 01:13:54,626 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:54,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:54,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:54,627 INFO L87 Difference]: Start difference. First operand 5186 states and 7618 transitions. cyclomatic complexity: 2560 Second operand 3 states. [2020-11-30 01:13:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:54,733 INFO L93 Difference]: Finished difference Result 10242 states and 14850 transitions. [2020-11-30 01:13:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:54,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 14850 transitions. [2020-11-30 01:13:54,840 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2020-11-30 01:13:54,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 14850 transitions. [2020-11-30 01:13:54,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2020-11-30 01:13:54,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2020-11-30 01:13:54,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 14850 transitions. [2020-11-30 01:13:54,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:54,950 INFO L691 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2020-11-30 01:13:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 14850 transitions. [2020-11-30 01:13:55,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2020-11-30 01:13:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10242 states. [2020-11-30 01:13:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 14850 transitions. [2020-11-30 01:13:55,307 INFO L714 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2020-11-30 01:13:55,307 INFO L594 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2020-11-30 01:13:55,307 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 01:13:55,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 14850 transitions. [2020-11-30 01:13:55,344 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2020-11-30 01:13:55,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:55,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:55,345 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:55,345 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:55,345 INFO L794 eck$LassoCheckResult]: Stem: 31249#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 31218#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 31219#L211 [2020-11-30 01:13:55,346 INFO L796 eck$LassoCheckResult]: Loop: 31219#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 31797#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 31793#L88 assume !(0 != main_~p1~0); 31791#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 31789#L92-1 assume !(0 != main_~p3~0); 31785#L96-1 assume !(0 != main_~p4~0); 31783#L100-1 assume !(0 != main_~p5~0); 31780#L104-1 assume !(0 != main_~p6~0); 31774#L108-1 assume !(0 != main_~p7~0); 31768#L112-1 assume !(0 != main_~p8~0); 31764#L116-1 assume !(0 != main_~p9~0); 31761#L120-1 assume !(0 != main_~p10~0); 31757#L124-1 assume !(0 != main_~p11~0); 31754#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 31751#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 31748#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 31743#L140-1 assume !(0 != main_~p1~0); 31739#L146-1 assume 0 != main_~p2~0; 31736#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 31730#L151 assume !(0 != main_~p3~0); 31381#L156-1 assume !(0 != main_~p4~0); 31383#L161-1 assume !(0 != main_~p5~0); 31708#L166-1 assume !(0 != main_~p6~0); 31709#L171-1 assume !(0 != main_~p7~0); 31690#L176-1 assume !(0 != main_~p8~0); 31692#L181-1 assume !(0 != main_~p9~0); 31816#L186-1 assume !(0 != main_~p10~0); 31813#L191-1 assume !(0 != main_~p11~0); 31809#L196-1 assume !(0 != main_~p12~0); 31805#L201-1 assume !(0 != main_~p13~0); 31802#L206-1 assume 0 != main_~p14~0; 31800#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 31219#L211 [2020-11-30 01:13:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:55,346 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2020-11-30 01:13:55,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:55,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767579359] [2020-11-30 01:13:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:55,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:55,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:55,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash -387149511, now seen corresponding path program 1 times [2020-11-30 01:13:55,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:55,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958883485] [2020-11-30 01:13:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:55,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958883485] [2020-11-30 01:13:55,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:55,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:55,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620286049] [2020-11-30 01:13:55,397 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:55,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:55,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:55,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:55,398 INFO L87 Difference]: Start difference. First operand 10242 states and 14850 transitions. cyclomatic complexity: 4864 Second operand 3 states. [2020-11-30 01:13:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:55,569 INFO L93 Difference]: Finished difference Result 20226 states and 28930 transitions. [2020-11-30 01:13:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:55,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 28930 transitions. [2020-11-30 01:13:55,846 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2020-11-30 01:13:55,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 28930 transitions. [2020-11-30 01:13:55,958 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2020-11-30 01:13:55,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2020-11-30 01:13:55,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 28930 transitions. [2020-11-30 01:13:56,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:56,000 INFO L691 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2020-11-30 01:13:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 28930 transitions. [2020-11-30 01:13:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2020-11-30 01:13:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20226 states. [2020-11-30 01:13:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 28930 transitions. [2020-11-30 01:13:56,420 INFO L714 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2020-11-30 01:13:56,420 INFO L594 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2020-11-30 01:13:56,420 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-30 01:13:56,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 28930 transitions. [2020-11-30 01:13:56,590 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2020-11-30 01:13:56,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:56,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:56,590 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:56,591 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:56,591 INFO L794 eck$LassoCheckResult]: Stem: 61730#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 61692#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 61693#L211 [2020-11-30 01:13:56,591 INFO L796 eck$LassoCheckResult]: Loop: 61693#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 61869#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 61865#L88 assume !(0 != main_~p1~0); 61861#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 61857#L92-1 assume !(0 != main_~p3~0); 61850#L96-1 assume !(0 != main_~p4~0); 61842#L100-1 assume !(0 != main_~p5~0); 61834#L104-1 assume !(0 != main_~p6~0); 61826#L108-1 assume !(0 != main_~p7~0); 61818#L112-1 assume !(0 != main_~p8~0); 61810#L116-1 assume !(0 != main_~p9~0); 61802#L120-1 assume !(0 != main_~p10~0); 61797#L124-1 assume !(0 != main_~p11~0); 61792#L128-1 assume !(0 != main_~p12~0); 61786#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 61787#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 61779#L140-1 assume !(0 != main_~p1~0); 61780#L146-1 assume 0 != main_~p2~0; 61967#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 61955#L151 assume !(0 != main_~p3~0); 61947#L156-1 assume !(0 != main_~p4~0); 61939#L161-1 assume !(0 != main_~p5~0); 61931#L166-1 assume !(0 != main_~p6~0); 61923#L171-1 assume !(0 != main_~p7~0); 61917#L176-1 assume !(0 != main_~p8~0); 61911#L181-1 assume !(0 != main_~p9~0); 61909#L186-1 assume !(0 != main_~p10~0); 61900#L191-1 assume !(0 != main_~p11~0); 61895#L196-1 assume !(0 != main_~p12~0); 61886#L201-1 assume !(0 != main_~p13~0); 61880#L206-1 assume 0 != main_~p14~0; 61876#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 61693#L211 [2020-11-30 01:13:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:56,592 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2020-11-30 01:13:56,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:56,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120933795] [2020-11-30 01:13:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:56,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:56,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:56,627 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2076093253, now seen corresponding path program 1 times [2020-11-30 01:13:56,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:56,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333095299] [2020-11-30 01:13:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:56,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333095299] [2020-11-30 01:13:56,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:56,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:56,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258387499] [2020-11-30 01:13:56,659 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:13:56,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:56,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:56,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:56,660 INFO L87 Difference]: Start difference. First operand 20226 states and 28930 transitions. cyclomatic complexity: 9216 Second operand 3 states. [2020-11-30 01:13:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:56,928 INFO L93 Difference]: Finished difference Result 39938 states and 56322 transitions. [2020-11-30 01:13:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:56,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 56322 transitions. [2020-11-30 01:13:57,190 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2020-11-30 01:13:57,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 56322 transitions. [2020-11-30 01:13:57,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2020-11-30 01:13:57,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2020-11-30 01:13:57,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 56322 transitions. [2020-11-30 01:13:57,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:57,676 INFO L691 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2020-11-30 01:13:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 56322 transitions. [2020-11-30 01:13:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2020-11-30 01:13:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39938 states. [2020-11-30 01:13:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 56322 transitions. [2020-11-30 01:13:58,490 INFO L714 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2020-11-30 01:13:58,490 INFO L594 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2020-11-30 01:13:58,490 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-30 01:13:58,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 56322 transitions. [2020-11-30 01:13:58,755 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2020-11-30 01:13:58,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:58,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:58,757 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:13:58,757 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:58,757 INFO L794 eck$LassoCheckResult]: Stem: 121892#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 121861#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 121862#L211 [2020-11-30 01:13:58,757 INFO L796 eck$LassoCheckResult]: Loop: 121862#L211 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 122137#L55 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 122133#L88 assume !(0 != main_~p1~0); 122130#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 122125#L92-1 assume !(0 != main_~p3~0); 122118#L96-1 assume !(0 != main_~p4~0); 122111#L100-1 assume !(0 != main_~p5~0); 122104#L104-1 assume !(0 != main_~p6~0); 122098#L108-1 assume !(0 != main_~p7~0); 122090#L112-1 assume !(0 != main_~p8~0); 122081#L116-1 assume !(0 != main_~p9~0); 122073#L120-1 assume !(0 != main_~p10~0); 121964#L124-1 assume !(0 != main_~p11~0); 121960#L128-1 assume !(0 != main_~p12~0); 121949#L132-1 assume !(0 != main_~p13~0); 121950#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 121941#L140-1 assume !(0 != main_~p1~0); 121942#L146-1 assume 0 != main_~p2~0; 121934#L152 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 121935#L151 assume !(0 != main_~p3~0); 121925#L156-1 assume !(0 != main_~p4~0); 121927#L161-1 assume !(0 != main_~p5~0); 122319#L166-1 assume !(0 != main_~p6~0); 122315#L171-1 assume !(0 != main_~p7~0); 122311#L176-1 assume !(0 != main_~p8~0); 122307#L181-1 assume !(0 != main_~p9~0); 122303#L186-1 assume !(0 != main_~p10~0); 122175#L191-1 assume !(0 != main_~p11~0); 122158#L196-1 assume !(0 != main_~p12~0); 122154#L201-1 assume !(0 != main_~p13~0); 122149#L206-1 assume 0 != main_~p14~0; 122145#L212 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 121862#L211 [2020-11-30 01:13:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2020-11-30 01:13:58,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:58,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020932576] [2020-11-30 01:13:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,787 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:58,793 INFO L82 PathProgramCache]: Analyzing trace with hash 224729337, now seen corresponding path program 1 times [2020-11-30 01:13:58,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:58,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357873002] [2020-11-30 01:13:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,812 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:58,813 INFO L82 PathProgramCache]: Analyzing trace with hash -233466693, now seen corresponding path program 1 times [2020-11-30 01:13:58,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:58,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495486348] [2020-11-30 01:13:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:58,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:58,840 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:59,069 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 01:13:59,232 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-30 01:13:59,680 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-11-30 01:13:59,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:13:59 BoogieIcfgContainer [2020-11-30 01:13:59,827 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:13:59,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:59,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:59,828 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:59,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:52" (3/4) ... [2020-11-30 01:13:59,833 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:13:59,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e72bb120-0279-4d84-b80c-6a7bc4277a7c/bin/uautomizer/witness.graphml [2020-11-30 01:13:59,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:59,914 INFO L168 Benchmark]: Toolchain (without parser) took 8944.02 ms. Allocated memory was 98.6 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 71.0 MB in the beginning and 1.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 289.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,914 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 55.3 MB in the beginning and 55.3 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:59,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.06 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 75.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:59,916 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,916 INFO L168 Benchmark]: RCFGBuilder took 800.42 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 49.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,918 INFO L168 Benchmark]: BuchiAutomizer took 7592.13 ms. Allocated memory was 98.6 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 49.1 MB in the beginning and 1.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 346.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,919 INFO L168 Benchmark]: Witness Printer took 85.05 ms. Allocated memory is still 2.0 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:59,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 55.3 MB in the beginning and 55.3 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.06 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 75.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 800.42 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 49.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7592.13 ms. Allocated memory was 98.6 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 49.1 MB in the beginning and 1.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 346.6 MB. Max. memory is 16.1 GB. * Witness Printer took 85.05 ms. Allocated memory is still 2.0 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 39938 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 1.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.3s Buchi closure took 0.2s. Biggest automaton had 39938 states and ocurred in iteration 10. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1083 SDtfs, 551 SDslu, 679 SDs, 0 SdLazy, 50 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI10 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 53]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3153} State at position 1 is {NULL=0, p1=0, p3=0, p5=0, NULL=3153, p10=0, p7=0, p9=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@639c387f=0, lk14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@726b2022=0, p14=13, lk10=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32959817=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@727b5028=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c4bad35=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53d93e42=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50bb7a68=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10ea189d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1237953f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3976cd6b=0, NULL=0, NULL=0, lk3=0, lk5=0, NULL=0, lk1=0, lk7=0, lk9=0, NULL=3155, \result=0, p2=11, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@117012dc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f87aea1=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@999211b=0, lk13=0, p13=0, p11=0, lk11=0, cond=14, NULL=3156, NULL=0, NULL=3154, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d92410e=0, lk4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65c0a284=14, lk6=0, lk2=0, lk8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 53]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND TRUE p2 != 0 [L93] lk2 = 1 [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND TRUE p2 != 0 [L152] COND FALSE !(lk2 != 1) [L153] lk2 = 0 [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND TRUE p14 != 0 [L212] COND FALSE !(lk14 != 1) [L213] lk14 = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...