./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 214dda1f52c1703a269c56a78db2e7c799b88ed8 ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:00:30,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:00:30,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:00:30,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:00:30,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:00:30,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:00:30,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:00:30,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:00:30,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:00:30,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:00:30,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:00:30,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:00:30,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:00:30,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:00:30,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:00:30,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:00:30,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:00:30,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:00:30,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:00:30,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:00:30,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:00:30,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:00:30,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:00:30,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:00:30,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:00:30,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:00:30,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:00:30,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:00:30,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:00:30,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:00:30,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:00:30,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:00:30,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:00:30,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:00:30,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:00:30,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:00:30,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:00:30,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:00:30,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:00:30,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:00:30,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:00:30,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:00:30,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:00:30,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:00:30,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:00:30,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:00:30,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:00:30,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:00:30,257 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:00:30,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:00:30,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:00:30,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:00:30,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:00:30,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:00:30,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:00:30,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:00:30,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:00:30,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:00:30,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:00:30,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:00:30,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:00:30,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:00:30,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:00:30,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:00:30,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:00:30,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:00:30,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:00:30,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:00:30,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:00:30,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:00:30,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:00:30,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:00:30,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 214dda1f52c1703a269c56a78db2e7c799b88ed8 [2021-10-13 01:00:30,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:00:30,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:00:30,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:00:30,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:00:30,636 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:00:30,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-10-13 01:00:30,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/data/baf0ceb38/85d6f56ee6e445a18ccc424e8ffbbaf2/FLAGd4fab652e [2021-10-13 01:00:31,143 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:00:31,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-10-13 01:00:31,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/data/baf0ceb38/85d6f56ee6e445a18ccc424e8ffbbaf2/FLAGd4fab652e [2021-10-13 01:00:31,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/data/baf0ceb38/85d6f56ee6e445a18ccc424e8ffbbaf2 [2021-10-13 01:00:31,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:00:31,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:00:31,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:00:31,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:00:31,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:00:31,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b07b6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31, skipping insertion in model container [2021-10-13 01:00:31,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:00:31,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:00:31,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-10-13 01:00:31,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:00:31,784 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:00:31,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-10-13 01:00:31,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:00:31,818 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:00:31,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31 WrapperNode [2021-10-13 01:00:31,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:00:31,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:00:31,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:00:31,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:00:31,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:00:31,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:00:31,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:00:31,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:00:31,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:00:31,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:00:31,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:00:31,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:00:31,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (1/1) ... [2021-10-13 01:00:31,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:00:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:00:31,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:00:31,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:00:31,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:00:31,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:00:31,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:00:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:00:32,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:00:32,126 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 01:00:32,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:00:32 BoogieIcfgContainer [2021-10-13 01:00:32,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:00:32,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:00:32,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:00:32,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:00:32,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:00:31" (1/3) ... [2021-10-13 01:00:32,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300cac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:00:32, skipping insertion in model container [2021-10-13 01:00:32,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:00:31" (2/3) ... [2021-10-13 01:00:32,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300cac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:00:32, skipping insertion in model container [2021-10-13 01:00:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:00:32" (3/3) ... [2021-10-13 01:00:32,146 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-10-13 01:00:32,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:00:32,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:00:32,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:00:32,207 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:00:32,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:00:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:00:32,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:00:32,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:00:32,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:00:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:00:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1269629357, now seen corresponding path program 1 times [2021-10-13 01:00:32,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:00:32,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398272673] [2021-10-13 01:00:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:00:32,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:00:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:00:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:00:32,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:00:32,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398272673] [2021-10-13 01:00:32,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398272673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:00:32,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:00:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:00:32,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706188968] [2021-10-13 01:00:32,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:00:32,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:00:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:00:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:00:32,516 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:00:32,626 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-13 01:00:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:00:32,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 01:00:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:00:32,637 INFO L225 Difference]: With dead ends: 30 [2021-10-13 01:00:32,637 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 01:00:32,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:00:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 01:00:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 01:00:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 01:00:32,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-10-13 01:00:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:00:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 01:00:32,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 01:00:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:00:32,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:00:32,679 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:00:32,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:00:32,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:00:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:00:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash 341011600, now seen corresponding path program 1 times [2021-10-13 01:00:32,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:00:32,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597362215] [2021-10-13 01:00:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:00:32,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:00:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:00:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:00:32,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:00:32,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597362215] [2021-10-13 01:00:32,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597362215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:00:32,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659704386] [2021-10-13 01:00:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:00:32,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:00:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:00:32,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:00:32,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:00:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:00:32,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:00:32,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:00:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:00:33,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659704386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:00:33,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:00:33,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 01:00:33,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618189296] [2021-10-13 01:00:33,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:00:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:00:33,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:00:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:00:33,213 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:00:33,264 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-13 01:00:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:00:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 01:00:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:00:33,266 INFO L225 Difference]: With dead ends: 17 [2021-10-13 01:00:33,266 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 01:00:33,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:00:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 01:00:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 01:00:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 01:00:33,273 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-10-13 01:00:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:00:33,274 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 01:00:33,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,274 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 01:00:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:00:33,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:00:33,276 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:00:33,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:00:33,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:00:33,491 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:00:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:00:33,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1292544691, now seen corresponding path program 2 times [2021-10-13 01:00:33,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:00:33,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749479271] [2021-10-13 01:00:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:00:33,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:00:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:00:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:00:33,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:00:33,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749479271] [2021-10-13 01:00:33,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749479271] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:00:33,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:00:33,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:00:33,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440511263] [2021-10-13 01:00:33,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:00:33,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:00:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:00:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:00:33,591 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:00:33,608 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 01:00:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:00:33,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 01:00:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:00:33,610 INFO L225 Difference]: With dead ends: 14 [2021-10-13 01:00:33,610 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:00:33,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:00:33,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:00:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:00:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:00:33,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-13 01:00:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:00:33,612 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:00:33,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:00:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:00:33,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:00:33,616 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:00:33,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:00:33,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:00:33,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:00:33,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:00:33,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:00:33,639 INFO L853 garLoopResultBuilder]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) [2021-10-13 01:00:33,640 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 66) no Hoare annotation was computed. [2021-10-13 01:00:33,640 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 71) no Hoare annotation was computed. [2021-10-13 01:00:33,640 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:00:33,640 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:00:33,640 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:00:33,641 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 72) no Hoare annotation was computed. [2021-10-13 01:00:33,641 INFO L857 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-10-13 01:00:33,641 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2021-10-13 01:00:33,641 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-10-13 01:00:33,642 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 73) no Hoare annotation was computed. [2021-10-13 01:00:33,642 INFO L853 garLoopResultBuilder]: At program point L70(lines 14 74) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2021-10-13 01:00:33,647 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:00:33,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:00:33 BoogieIcfgContainer [2021-10-13 01:00:33,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:00:33,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:00:33,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:00:33,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:00:33,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:00:32" (3/4) ... [2021-10-13 01:00:33,666 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:00:33,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 01:00:33,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:00:33,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:00:33,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:00:33,745 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:00:33,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:00:33,747 INFO L168 Benchmark]: Toolchain (without parser) took 2175.12 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 74.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,747 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:00:33,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.71 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 74.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.33 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,749 INFO L168 Benchmark]: Boogie Preprocessor took 19.59 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.6 MB in the end (delta: 813.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:00:33,749 INFO L168 Benchmark]: RCFGBuilder took 265.98 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 63.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,750 INFO L168 Benchmark]: TraceAbstraction took 1521.01 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.4 MB in the beginning and 77.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,751 INFO L168 Benchmark]: Witness Printer took 84.16 ms. Allocated memory is still 119.5 MB. Free memory was 77.2 MB in the beginning and 74.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:00:33,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.71 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 74.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.33 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.59 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.6 MB in the end (delta: 813.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 265.98 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 63.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1521.01 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.4 MB in the beginning and 77.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Witness Printer took 84.16 ms. Allocated memory is still 119.5 MB. Free memory was 77.2 MB in the beginning and 74.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 57]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1448.8ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 10.8ms, AutomataDifference: 218.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21.6ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 57 SDs, 0 SdLazy, 58 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 98.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 15 HoareAnnotationTreeSize, 2 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 9.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 40.9ms SsaConstructionTime, 149.3ms SatisfiabilityAnalysisTime, 542.6ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 3 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || !(__VERIFIER_assert__cond == 0) RESULT: Ultimate proved your program to be correct! [2021-10-13 01:00:33,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a8843-29d7-46c3-9ecf-0628356ba386/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...