./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/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 cc182827b6359022a3b8a131cfda42ecf59c344f ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:13:05,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:13:05,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:13:05,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:13:05,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:13:05,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:13:05,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:13:05,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:13:05,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:13:05,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:13:05,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:13:05,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:13:05,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:13:05,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:13:05,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:13:05,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:13:05,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:13:05,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:13:05,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:13:05,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:13:05,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:13:05,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:13:05,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:13:05,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:13:05,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:13:05,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:13:05,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:13:05,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:13:05,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:13:05,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:13:05,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:13:05,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:13:05,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:13:05,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:13:05,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:13:05,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:13:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:13:05,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:13:05,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:13:05,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:13:05,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:13:05,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:13:05,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:13:05,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:13:05,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:13:05,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:13:05,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:13:05,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:13:05,387 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:13:05,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:13:05,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:13:05,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:13:05,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:13:05,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:13:05,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:13:05,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:13:05,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:13:05,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:13:05,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:13:05,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:13:05,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:13:05,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:13:05,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:13:05,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:13:05,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:13:05,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:13:05,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:13:05,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:13:05,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:13:05,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:13:05,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:13:05,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:13:05,396 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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc182827b6359022a3b8a131cfda42ecf59c344f [2021-10-13 01:13:05,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:13:05,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:13:05,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:13:05,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:13:05,873 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:13:05,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c [2021-10-13 01:13:05,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/data/1ca550d43/bdba889343604ceb88004a5a46c9e91f/FLAG3cf4a7707 [2021-10-13 01:13:06,527 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:13:06,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c [2021-10-13 01:13:06,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/data/1ca550d43/bdba889343604ceb88004a5a46c9e91f/FLAG3cf4a7707 [2021-10-13 01:13:06,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/data/1ca550d43/bdba889343604ceb88004a5a46c9e91f [2021-10-13 01:13:06,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:13:06,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:13:06,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:13:06,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:13:06,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:13:06,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:13:06" (1/1) ... [2021-10-13 01:13:06,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618dc4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:06, skipping insertion in model container [2021-10-13 01:13:06,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:13:06" (1/1) ... [2021-10-13 01:13:06,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:13:06,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:13:07,195 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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2021-10-13 01:13:07,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:13:07,221 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:13:07,237 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_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2021-10-13 01:13:07,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:13:07,258 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:13:07,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07 WrapperNode [2021-10-13 01:13:07,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:13:07,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:13:07,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:13:07,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:13:07,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:13:07,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:13:07,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:13:07,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:13:07,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:13:07,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:13:07,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:13:07,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:13:07,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (1/1) ... [2021-10-13 01:13:07,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:13:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:13:07,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:13:07,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:13:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:13:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:13:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:13:07,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:13:07,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:13:07,742 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 01:13:07,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:13:07 BoogieIcfgContainer [2021-10-13 01:13:07,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:13:07,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:13:07,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:13:07,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:13:07,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:13:06" (1/3) ... [2021-10-13 01:13:07,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693563a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:13:07, skipping insertion in model container [2021-10-13 01:13:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:13:07" (2/3) ... [2021-10-13 01:13:07,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693563a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:13:07, skipping insertion in model container [2021-10-13 01:13:07,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:13:07" (3/3) ... [2021-10-13 01:13:07,762 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound1.c [2021-10-13 01:13:07,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:13:07,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 01:13:07,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:13:07,860 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 01:13:07,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 01:13:07,874 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 01:13:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:13:07,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:13:07,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:13:07,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:13:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:13:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 01:13:07,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:13:07,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199089347] [2021-10-13 01:13:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:07,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:13:08,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:13:08,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877401983] [2021-10-13 01:13:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:08,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:13:08,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:13:08,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:13:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:13:08,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:13:08,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:13:08,215 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 01:13:08,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:13:08,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199089347] [2021-10-13 01:13:08,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:13:08,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877401983] [2021-10-13 01:13:08,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877401983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:13:08,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:13:08,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:13:08,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643226304] [2021-10-13 01:13:08,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:13:08,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:13:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:13:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:13:08,252 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 01:13:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:13:08,339 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-10-13 01:13:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:13:08,341 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 01:13:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:13:08,350 INFO L225 Difference]: With dead ends: 39 [2021-10-13 01:13:08,351 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 01:13:08,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:13:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 01:13:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-10-13 01:13:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 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 01:13:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-13 01:13:08,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-13 01:13:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:13:08,386 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-13 01:13:08,386 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 01:13:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-13 01:13:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:13:08,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:13:08,388 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:13:08,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 01:13:08,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 01:13:08,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:13:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:13:08,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-13 01:13:08,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:13:08,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874003041] [2021-10-13 01:13:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:08,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:13:08,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:13:08,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639245851] [2021-10-13 01:13:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:08,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:13:08,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:13:08,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:13:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:13:08,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:13:08,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:13:08,731 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 01:13:08,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:13:08,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874003041] [2021-10-13 01:13:08,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:13:08,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639245851] [2021-10-13 01:13:08,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639245851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:13:08,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:13:08,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:13:08,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499810564] [2021-10-13 01:13:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:13:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:13:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:13:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:13:08,737 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:13:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:13:08,749 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-13 01:13:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:13:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 01:13:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:13:08,750 INFO L225 Difference]: With dead ends: 19 [2021-10-13 01:13:08,751 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 01:13:08,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:13:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 01:13:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 01:13:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 01:13:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-13 01:13:08,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-13 01:13:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:13:08,756 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 01:13:08,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:13:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-13 01:13:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:13:08,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:13:08,757 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:13:08,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:13:08,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:08,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:13:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:13:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-13 01:13:08,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:13:08,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549045611] [2021-10-13 01:13:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:08,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:13:09,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:13:09,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508428260] [2021-10-13 01:13:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:09,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:09,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:13:09,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:13:09,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:13:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:13:09,098 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:13:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:13:09,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:13:09,131 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:13:09,132 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:13:09,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:13:09,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:13:09,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:09,351 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:13:09,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:13:09 BoogieIcfgContainer [2021-10-13 01:13:09,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:13:09,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:13:09,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:13:09,375 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:13:09,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:13:07" (3/4) ... [2021-10-13 01:13:09,378 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:13:09,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:13:09,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:13:09,420 INFO L168 Benchmark]: Toolchain (without parser) took 2512.44 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 57.6 MB in the beginning and 88.0 MB in the end (delta: -30.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,420 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:13:09,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.35 ms. Allocated memory is still 92.3 MB. Free memory was 57.4 MB in the beginning and 67.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.42 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,422 INFO L168 Benchmark]: Boogie Preprocessor took 22.29 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 65.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,423 INFO L168 Benchmark]: RCFGBuilder took 423.83 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 55.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,424 INFO L168 Benchmark]: TraceAbstraction took 1628.02 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.2 MB in the beginning and 90.0 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,424 INFO L168 Benchmark]: Witness Printer took 43.18 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 88.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:09,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.35 ms. Allocated memory is still 92.3 MB. Free memory was 57.4 MB in the beginning and 67.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.42 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.29 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 65.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 423.83 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 55.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1628.02 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.2 MB in the beginning and 90.0 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Witness Printer took 43.18 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 88.0 MB in the end (delta: 2.0 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND TRUE !(c < k) VAL [counter=1] [L45] x = x * (z - 1) [L16] COND TRUE !(cond) VAL [counter=1] [L18] reach_error() VAL [counter=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1498.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.8ms, AutomataDifference: 144.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.7ms SsaConstructionTime, 46.7ms SatisfiabilityAnalysisTime, 172.3ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 4 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:13:09,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4296b6e-e3ba-4c15-b9c6-5060b8fd233b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...