./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC --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 75e3ae35873fc976ba5f9091947bbca66fbdab4b ............................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 00:26:05,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:05,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:05,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:05,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:05,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:05,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:05,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:05,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:05,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:05,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:05,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:05,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:05,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:05,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:05,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:05,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:05,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:05,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:05,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:05,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:05,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:05,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:05,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:05,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:05,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:05,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:05,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:05,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:05,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:05,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:05,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:05,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:05,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:05,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:05,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:05,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:05,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:05,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:05,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:05,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:05,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:26:05,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:05,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:05,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:05,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:05,371 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:05,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:05,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:05,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:05,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:05,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:05,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:05,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:05,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:05,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:05,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:05,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:05,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:05,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:05,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:05,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:05,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:05,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:05,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:05,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:05,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:05,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:26:05,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:05,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:05,377 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_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75e3ae35873fc976ba5f9091947bbca66fbdab4b [2021-10-11 00:26:05,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:05,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:05,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:05,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:05,738 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:05,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2021-10-11 00:26:05,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/data/0fbb38385/b0f1fb9ab98d48088a8cad408a44ba9f/FLAG64b4dc7e4 [2021-10-11 00:26:06,326 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:06,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2021-10-11 00:26:06,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/data/0fbb38385/b0f1fb9ab98d48088a8cad408a44ba9f/FLAG64b4dc7e4 [2021-10-11 00:26:06,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/data/0fbb38385/b0f1fb9ab98d48088a8cad408a44ba9f [2021-10-11 00:26:06,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:06,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:06,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:06,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:06,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:06,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:06" (1/1) ... [2021-10-11 00:26:06,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e23d007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:06, skipping insertion in model container [2021-10-11 00:26:06,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:06" (1/1) ... [2021-10-11 00:26:06,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:06,949 WARN L226 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_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2021-10-11 00:26:06,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:06,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:06,992 WARN L226 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_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2021-10-11 00:26:07,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:07,016 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:07,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07 WrapperNode [2021-10-11 00:26:07,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:07,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:07,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:07,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:07,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:07,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:07,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:07,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:07,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... [2021-10-11 00:26:07,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:07,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:07,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:07,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:07,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:07,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:07,427 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 00:26:07,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:07 BoogieIcfgContainer [2021-10-11 00:26:07,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:07,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:26:07,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:26:07,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:26:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:06" (1/3) ... [2021-10-11 00:26:07,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c2d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:07, skipping insertion in model container [2021-10-11 00:26:07,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:07" (2/3) ... [2021-10-11 00:26:07,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c2d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:07, skipping insertion in model container [2021-10-11 00:26:07,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:07" (3/3) ... [2021-10-11 00:26:07,449 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2021-10-11 00:26:07,465 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:26:07,469 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:26:07,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:26:07,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:26:07,513 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:26:07,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:26:07,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:07,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:07,514 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:26:07,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:07,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:26:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 00:26:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:26:07,537 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:07,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:26:07,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 890461031, now seen corresponding path program 1 times [2021-10-11 00:26:07,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:07,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47205155] [2021-10-11 00:26:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:07,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47205155] [2021-10-11 00:26:07,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:07,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:26:07,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777244404] [2021-10-11 00:26:07,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:26:07,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:07,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:26:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:07,742 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-10-11 00:26:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:07,760 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-10-11 00:26:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:26:07,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:26:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:07,771 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:26:07,771 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 00:26:07,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 00:26:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 00:26:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:26:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 00:26:07,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-10-11 00:26:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:07,817 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 00:26:07,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:26:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 00:26:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:26:07,820 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:07,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:26:07,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:26:07,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-11 00:26:07,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:07,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955124032] [2021-10-11 00:26:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:07,875 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:07,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808491126] [2021-10-11 00:26:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:07,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 00:26:08,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:08,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955124032] [2021-10-11 00:26:08,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:08,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808491126] [2021-10-11 00:26:08,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:08,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:08,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639697133] [2021-10-11 00:26:08,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:08,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:08,159 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2021-10-11 00:26:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:08,278 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-11 00:26:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:08,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 00:26:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:08,280 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:26:08,280 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:26:08,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:26:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-11 00:26:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:26:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-11 00:26:08,288 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2021-10-11 00:26:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:08,289 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-11 00:26:08,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-11 00:26:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:26:08,290 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:08,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:08,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:26:08,505 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1545533000, now seen corresponding path program 1 times [2021-10-11 00:26:08,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:08,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385001095] [2021-10-11 00:26:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:08,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:08,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093165090] [2021-10-11 00:26:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:08,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:26:08,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:08,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385001095] [2021-10-11 00:26:08,799 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:08,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093165090] [2021-10-11 00:26:08,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:26:08,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-11 00:26:08,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340313177] [2021-10-11 00:26:08,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:26:08,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:08,806 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2021-10-11 00:26:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:08,848 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 00:26:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:08,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:26:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:08,853 INFO L225 Difference]: With dead ends: 26 [2021-10-11 00:26:08,853 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 00:26:08,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:26:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 00:26:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 00:26:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:26:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-11 00:26:08,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-10-11 00:26:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:08,870 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-11 00:26:08,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:26:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-11 00:26:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:26:08,872 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:08,872 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:09,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:09,095 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:09,096 INFO L82 PathProgramCache]: Analyzing trace with hash -666919436, now seen corresponding path program 1 times [2021-10-11 00:26:09,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:09,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580378182] [2021-10-11 00:26:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:09,121 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320388286] [2021-10-11 00:26:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:09,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:09,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:09,257 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:09,257 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:26:09,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:09,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:26:09 BoogieIcfgContainer [2021-10-11 00:26:09,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:26:09,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:09,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:09,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:09,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:07" (3/4) ... [2021-10-11 00:26:09,530 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:26:09,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec85cf1b-ae8e-4042-ba3f-6129ba9252c1/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:26:09,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:09,582 INFO L168 Benchmark]: Toolchain (without parser) took 2855.74 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.9 MB in the beginning and 64.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,583 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:09,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.45 ms. Allocated memory is still 113.2 MB. Free memory was 74.6 MB in the beginning and 80.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 113.2 MB. Free memory was 80.3 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,585 INFO L168 Benchmark]: Boogie Preprocessor took 26.34 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 77.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:09,586 INFO L168 Benchmark]: RCFGBuilder took 342.80 ms. Allocated memory is still 113.2 MB. Free memory was 77.6 MB in the beginning and 64.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,587 INFO L168 Benchmark]: TraceAbstraction took 2095.39 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 64.1 MB in the beginning and 66.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,588 INFO L168 Benchmark]: Witness Printer took 54.00 ms. Allocated memory is still 136.3 MB. Free memory was 66.2 MB in the beginning and 64.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:09,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.45 ms. Allocated memory is still 113.2 MB. Free memory was 74.6 MB in the beginning and 80.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 113.2 MB. Free memory was 80.3 MB in the beginning and 78.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.34 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 77.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.80 ms. Allocated memory is still 113.2 MB. Free memory was 77.6 MB in the beginning and 64.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2095.39 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 64.1 MB in the beginning and 66.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 54.00 ms. Allocated memory is still 136.3 MB. Free memory was 66.2 MB in the beginning and 64.1 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: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0] [L31] EXPR counter++ VAL [counter=1] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=1] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=1] [L45] x++ VAL [counter=1] [L31] EXPR counter++ VAL [counter=2] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x [L14] COND TRUE !(cond) VAL [counter=2] [L16] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 25 SDslu, 29 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 SizeOfPredicates, 9 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 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! Received shutdown request...