./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/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 9d3f5fa5c8c3d829aef3eebf7b5c06ebf07bf56b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:17:34,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:34,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:34,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:34,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:34,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:34,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:34,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:34,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:34,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:34,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:34,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:34,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:34,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:34,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:34,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:34,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:34,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:34,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:34,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:34,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:34,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:34,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:34,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:34,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:34,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:34,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:34,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:34,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:34,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:34,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:34,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:34,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:34,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:34,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:34,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:34,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:34,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:34,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:34,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:34,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:34,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:17:34,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:34,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:34,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:34,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:34,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:34,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:34,245 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:34,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:34,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:17:34,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:17:34,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:17:34,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:34,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:17:34,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:34,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:17:34,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:17:34,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:17:34,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:34,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:17:34,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:34,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:34,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:34,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:34,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:34,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:34,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:17:34,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:17:34,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:17:34,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:17:34,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:34,251 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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d3f5fa5c8c3d829aef3eebf7b5c06ebf07bf56b [2021-10-13 00:17:34,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:34,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:34,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:34,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:34,526 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:34,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c [2021-10-13 00:17:34,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/data/9d15ac7bd/8a4e992930aa436d99ddb3ad8472e784/FLAG29953e540 [2021-10-13 00:17:35,029 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:35,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c [2021-10-13 00:17:35,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/data/9d15ac7bd/8a4e992930aa436d99ddb3ad8472e784/FLAG29953e540 [2021-10-13 00:17:35,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/data/9d15ac7bd/8a4e992930aa436d99ddb3ad8472e784 [2021-10-13 00:17:35,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:35,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:17:35,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:35,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:35,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:35,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191729c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35, skipping insertion in model container [2021-10-13 00:17:35,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:35,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:35,617 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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c[458,471] [2021-10-13 00:17:35,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:35,646 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:17:35,658 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_16331e89-bea8-4b6d-92a9-d8b74e257b2b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c[458,471] [2021-10-13 00:17:35,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:35,683 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:17:35,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35 WrapperNode [2021-10-13 00:17:35,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:35,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:35,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:17:35,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:17:35,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:35,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:17:35,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:17:35,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:17:35,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:17:35,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:17:35,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:17:35,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:17:35,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (1/1) ... [2021-10-13 00:17:35,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:35,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:17:35,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:17:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:17:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:17:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:17:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:17:36,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:17:36,061 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 00:17:36,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:36 BoogieIcfgContainer [2021-10-13 00:17:36,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:17:36,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:17:36,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:17:36,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:17:36,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:17:35" (1/3) ... [2021-10-13 00:17:36,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bed04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:36, skipping insertion in model container [2021-10-13 00:17:36,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:35" (2/3) ... [2021-10-13 00:17:36,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bed04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:36, skipping insertion in model container [2021-10-13 00:17:36,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:36" (3/3) ... [2021-10-13 00:17:36,094 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound5.c [2021-10-13 00:17:36,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:17:36,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:17:36,166 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:17:36,173 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 00:17:36,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:17:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:17:36,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:36,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:17:36,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 00:17:36,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:36,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095866959] [2021-10-13 00:17:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:36,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:36,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:36,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201352826] [2021-10-13 00:17:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:36,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:36,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:36,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:17:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:17:36,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:36,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:36,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095866959] [2021-10-13 00:17:36,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:36,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201352826] [2021-10-13 00:17:36,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201352826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:36,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:17:36,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:17:36,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324219209] [2021-10-13 00:17:36,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:17:36,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:17:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:17:36,608 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:36,682 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-10-13 00:17:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:17:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-13 00:17:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:36,692 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:17:36,692 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:17:36,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:17:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:17:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-10-13 00:17:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 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 00:17:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-13 00:17:36,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-10-13 00:17:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:36,726 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-13 00:17:36,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-13 00:17:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:17:36,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:36,728 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:36,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:36,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 00:17:36,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:36,943 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-13 00:17:36,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:36,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536434528] [2021-10-13 00:17:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:36,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:36,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:36,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238020276] [2021-10-13 00:17:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:36,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:36,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:36,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:17:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:37,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:17:37,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:37,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:37,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536434528] [2021-10-13 00:17:37,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:37,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238020276] [2021-10-13 00:17:37,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238020276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:37,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:37,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:17:37,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352007889] [2021-10-13 00:17:37,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:17:37,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:17:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:17:37,157 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:37,244 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-10-13 00:17:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:17:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-10-13 00:17:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:37,245 INFO L225 Difference]: With dead ends: 29 [2021-10-13 00:17:37,246 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:17:37,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:17:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-13 00:17:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-13 00:17:37,255 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-10-13 00:17:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:37,256 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-13 00:17:37,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-13 00:17:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:17:37,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:37,258 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-10-13 00:17:37,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:37,463 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:37,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-10-13 00:17:37,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624669968] [2021-10-13 00:17:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:37,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:37,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:37,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412505041] [2021-10-13 00:17:37,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:17:37,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:37,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:37,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:17:37,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:17:37,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:37,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:17:37,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:37,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:37,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624669968] [2021-10-13 00:17:37,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:37,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412505041] [2021-10-13 00:17:37,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412505041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:37,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:37,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:17:37,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460815481] [2021-10-13 00:17:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:17:37,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:17:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:37,837 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 00:17:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:37,907 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-13 00:17:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:17:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) Word has length 14 [2021-10-13 00:17:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:37,909 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:17:37,909 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:17:37,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:17:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:17:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-10-13 00:17:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-13 00:17:37,915 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-10-13 00:17:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:37,916 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-13 00:17:37,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 00:17:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-13 00:17:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:17:37,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:37,917 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-10-13 00:17:37,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:38,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:38,121 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-10-13 00:17:38,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:38,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079878455] [2021-10-13 00:17:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:38,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:38,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:38,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282997190] [2021-10-13 00:17:38,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:17:38,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:38,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:38,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:17:39,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:17:39,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:39,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:17:39,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 00:17:40,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:40,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079878455] [2021-10-13 00:17:40,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:40,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282997190] [2021-10-13 00:17:40,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282997190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:40,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:40,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:17:40,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522765832] [2021-10-13 00:17:40,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:17:40,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:17:40,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:17:40,030 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:17:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:40,818 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-13 00:17:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:17:40,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 18 [2021-10-13 00:17:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:40,819 INFO L225 Difference]: With dead ends: 24 [2021-10-13 00:17:40,819 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:17:40,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:17:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:17:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:17:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:17:40,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-13 00:17:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:40,821 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:17:40,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:17:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:17:40,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:17:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:17:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:17:40,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:41,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:41,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:17:41,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:41,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:41,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:41,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:41,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:17:41,087 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2021-10-13 00:17:41,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 00:17:41,088 INFO L853 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= (+ ULTIMATE.start_main_~y~0 (* 3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 6 ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0))) [2021-10-13 00:17:41,088 INFO L857 garLoopResultBuilder]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2021-10-13 00:17:41,088 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-13 00:17:41,088 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-13 00:17:41,088 INFO L860 garLoopResultBuilder]: At program point L38(lines 18 39) the Hoare annotation is: true [2021-10-13 00:17:41,088 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:17:41,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:17:41,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:17:41,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 00:17:41,089 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-13 00:17:41,089 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (and (= (+ ULTIMATE.start_main_~y~0 (* 3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 6 ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-13 00:17:41,090 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-13 00:17:41,090 INFO L860 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-10-13 00:17:41,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:17:41,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:17:41 BoogieIcfgContainer [2021-10-13 00:17:41,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:17:41,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:17:41,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:17:41,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:17:41,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:36" (3/4) ... [2021-10-13 00:17:41,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:17:41,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 00:17:41,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:17:41,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:17:41,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:17:41,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:17:41,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:17:41,159 INFO L168 Benchmark]: Toolchain (without parser) took 5741.71 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 81.6 MB in the beginning and 67.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,160 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 90.6 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:41,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.59 ms. Allocated memory is still 117.4 MB. Free memory was 81.3 MB in the beginning and 91.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,162 INFO L168 Benchmark]: Boogie Preprocessor took 20.12 ms. Allocated memory is still 117.4 MB. Free memory was 89.9 MB in the beginning and 88.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,162 INFO L168 Benchmark]: RCFGBuilder took 323.76 ms. Allocated memory is still 117.4 MB. Free memory was 88.5 MB in the beginning and 79.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,163 INFO L168 Benchmark]: TraceAbstraction took 5043.13 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 78.7 MB in the beginning and 69.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,164 INFO L168 Benchmark]: Witness Printer took 48.75 ms. Allocated memory is still 142.6 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:41,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 90.6 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.59 ms. Allocated memory is still 117.4 MB. Free memory was 81.3 MB in the beginning and 91.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.12 ms. Allocated memory is still 117.4 MB. Free memory was 89.9 MB in the beginning and 88.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 323.76 ms. Allocated memory is still 117.4 MB. Free memory was 88.5 MB in the beginning and 79.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5043.13 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 78.7 MB in the beginning and 69.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 48.75 ms. Allocated memory is still 142.6 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4930.1ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 10.7ms, AutomataDifference: 1059.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 56.6ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 50 SDslu, 91 SDs, 0 SdLazy, 84 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 855.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 167.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 52 HoareAnnotationTreeSize, 4 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 18.5ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 32.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.7ms SsaConstructionTime, 1784.5ms SatisfiabilityAnalysisTime, 679.4ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 286 SizeOfPredicates, 16 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 20/34 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 2 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: y + 3 * (y * y) + 2 * (y * y * y) == 6 * x && 1 == cond - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (y + 3 * (y * y) + 2 * (y * y * y) == 6 * x && 1 == cond) || (y == 0 && x == 0) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:17:41,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16331e89-bea8-4b6d-92a9-d8b74e257b2b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...