./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.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_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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_26745603-d57b-4425-b07f-f37583e98d3f/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 66d8c88ea116cc4d626a5309461c01e3740129b8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:22:56,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:56,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:56,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:56,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:56,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:56,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:56,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:56,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:56,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:56,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:56,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:56,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:56,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:56,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:56,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:56,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:56,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:56,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:56,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:56,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:56,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:56,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:56,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:56,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:56,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:56,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:56,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:56,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:56,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:56,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:56,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:56,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:56,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:56,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:56,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:56,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:56,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:56,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:56,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:56,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:56,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:22:56,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:56,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:56,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:56,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:56,200 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:56,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:56,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:56,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:56,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:56,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:56,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:22:56,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:56,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:22:56,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:56,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:22:56,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:56,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:22:56,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:56,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:56,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:56,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:56,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:56,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:56,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:22:56,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:56,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:56,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:22:56,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:56,206 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_26745603-d57b-4425-b07f-f37583e98d3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d8c88ea116cc4d626a5309461c01e3740129b8 [2021-10-11 00:22:56,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:56,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:56,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:56,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:56,507 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:56,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2021-10-11 00:22:56,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/data/32f9649ed/58c9c8fa3f6844cc8c0630e90a4d3611/FLAGcb49b1df8 [2021-10-11 00:22:57,034 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:57,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2021-10-11 00:22:57,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/data/32f9649ed/58c9c8fa3f6844cc8c0630e90a4d3611/FLAGcb49b1df8 [2021-10-11 00:22:57,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/data/32f9649ed/58c9c8fa3f6844cc8c0630e90a4d3611 [2021-10-11 00:22:57,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:57,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:22:57,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:57,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:57,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:57,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dea156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57, skipping insertion in model container [2021-10-11 00:22:57,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:57,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:57,656 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_26745603-d57b-4425-b07f-f37583e98d3f/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c[597,610] [2021-10-11 00:22:57,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:57,688 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:57,700 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_26745603-d57b-4425-b07f-f37583e98d3f/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c[597,610] [2021-10-11 00:22:57,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:57,722 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:57,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57 WrapperNode [2021-10-11 00:22:57,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:57,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:57,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:22:57,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:22:57,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:57,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:57,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:57,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:57,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... [2021-10-11 00:22:57,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:57,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:57,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:57,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:57,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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 00:22:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:22:57,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:22:57,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:57,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:58,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:58,190 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:22:58,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:58 BoogieIcfgContainer [2021-10-11 00:22:58,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:58,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:58,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:58,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:58,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:57" (1/3) ... [2021-10-11 00:22:58,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcdd52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:58, skipping insertion in model container [2021-10-11 00:22:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:57" (2/3) ... [2021-10-11 00:22:58,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcdd52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:58, skipping insertion in model container [2021-10-11 00:22:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:58" (3/3) ... [2021-10-11 00:22:58,199 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2021-10-11 00:22:58,213 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:58,216 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:22:58,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:22:58,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:58,271 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:22:58,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:58,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:58,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:58,272 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:58,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:58,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 00:22:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:22:58,295 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:58,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:58,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-11 00:22:58,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:58,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923408334] [2021-10-11 00:22:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,458 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 00:22:58,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923408334] [2021-10-11 00:22:58,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:58,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:22:58,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507030955] [2021-10-11 00:22:58,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:22:58,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:58,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:22:58,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:22:58,490 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-10-11 00:22:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:58,505 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-10-11 00:22:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:22:58,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 00:22:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:58,514 INFO L225 Difference]: With dead ends: 39 [2021-10-11 00:22:58,515 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:22:58,517 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 00:22:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:22:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 00:22:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:22:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-11 00:22:58,550 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-11 00:22:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:58,550 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-11 00:22:58,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:22:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-11 00:22:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:22:58,552 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:58,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:58,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:58,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-11 00:22:58,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:58,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562033774] [2021-10-11 00:22:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:58,578 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:58,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359480368] [2021-10-11 00:22:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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 00:22:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:22:58,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:58,839 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 00:22:58,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562033774] [2021-10-11 00:22:58,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:58,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359480368] [2021-10-11 00:22:58,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:58,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:22:58,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248924983] [2021-10-11 00:22:58,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:22:58,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:58,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:22:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:58,845 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2021-10-11 00:22:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:59,036 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-11 00:22:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:22:59,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 00:22:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:59,046 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:22:59,046 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:22:59,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:22:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:22:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-11 00:22:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 00:22:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-11 00:22:59,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2021-10-11 00:22:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:59,053 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-11 00:22:59,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:22:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-11 00:22:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:22:59,055 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:59,055 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:59,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:22:59,275 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:59,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2039286562, now seen corresponding path program 1 times [2021-10-11 00:22:59,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:59,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246301424] [2021-10-11 00:22:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:59,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:59,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130788310] [2021-10-11 00:22:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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 00:22:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 00:22:59,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:59,697 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:22:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:59,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246301424] [2021-10-11 00:22:59,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:59,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130788310] [2021-10-11 00:22:59,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:59,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-11 00:22:59,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192065818] [2021-10-11 00:22:59,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:22:59,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:59,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:22:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:22:59,741 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2021-10-11 00:23:00,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:00,134 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-11 00:23:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:23:00,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-10-11 00:23:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:00,137 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:23:00,137 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:23:00,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:23:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:23:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-10-11 00:23:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:23:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-11 00:23:00,151 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-10-11 00:23:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:00,151 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-11 00:23:00,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:23:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-11 00:23:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:23:00,154 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:00,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:00,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:00,375 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash -68659948, now seen corresponding path program 1 times [2021-10-11 00:23:00,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:00,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235900254] [2021-10-11 00:23:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:00,392 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:00,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140449406] [2021-10-11 00:23:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/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 00:23:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:00,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:23:00,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:00,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235900254] [2021-10-11 00:23:00,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:23:00,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140449406] [2021-10-11 00:23:00,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:00,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:23:00,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347145569] [2021-10-11 00:23:00,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:23:00,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:23:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:23:00,567 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 7 states. [2021-10-11 00:23:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:00,770 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-11 00:23:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:23:00,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-10-11 00:23:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:00,771 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:23:00,772 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 00:23:00,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:23:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 00:23:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-10-11 00:23:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:23:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-11 00:23:00,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2021-10-11 00:23:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:00,779 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-11 00:23:00,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:23:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-11 00:23:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:23:00,780 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:00,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:01,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:01,006 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -878006574, now seen corresponding path program 1 times [2021-10-11 00:23:01,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:01,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110268522] [2021-10-11 00:23:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:01,022 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:01,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795468625] [2021-10-11 00:23:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:01,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-11 00:23:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:01,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:01,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110268522] [2021-10-11 00:23:01,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:23:01,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795468625] [2021-10-11 00:23:01,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:01,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-11 00:23:01,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928153690] [2021-10-11 00:23:01,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:23:01,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:23:01,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:23:01,388 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 11 states. [2021-10-11 00:23:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:01,665 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-11 00:23:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:23:01,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2021-10-11 00:23:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:01,670 INFO L225 Difference]: With dead ends: 40 [2021-10-11 00:23:01,670 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:23:01,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:23:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:23:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-10-11 00:23:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 00:23:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-10-11 00:23:01,690 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2021-10-11 00:23:01,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:01,691 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-10-11 00:23:01,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:23:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-10-11 00:23:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:23:01,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:01,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:01,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:01,918 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:01,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1487509410, now seen corresponding path program 2 times [2021-10-11 00:23:01,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:01,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248999921] [2021-10-11 00:23:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:01,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:01,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184531937] [2021-10-11 00:23:01,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:01,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:23:01,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:23:01,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:23:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:23:02,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248999921] [2021-10-11 00:23:02,117 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:23:02,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184531937] [2021-10-11 00:23:02,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:02,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:23:02,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008356351] [2021-10-11 00:23:02,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:23:02,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:23:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:02,124 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2021-10-11 00:23:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:02,209 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-11 00:23:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:23:02,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-10-11 00:23:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:02,211 INFO L225 Difference]: With dead ends: 36 [2021-10-11 00:23:02,211 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:23:02,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:23:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:23:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:23:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:23:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-11 00:23:02,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2021-10-11 00:23:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:02,222 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-11 00:23:02,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:23:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-11 00:23:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:23:02,223 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:02,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:02,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:23:02,438 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2074315424, now seen corresponding path program 1 times [2021-10-11 00:23:02,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367941164] [2021-10-11 00:23:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:02,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:02,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014123262] [2021-10-11 00:23:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:02,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:23:02,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:02,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367941164] [2021-10-11 00:23:02,761 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:23:02,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014123262] [2021-10-11 00:23:02,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:02,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:23:02,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064199333] [2021-10-11 00:23:02,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:23:02,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:23:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:02,764 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2021-10-11 00:23:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:02,875 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-11 00:23:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:23:02,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-10-11 00:23:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:02,876 INFO L225 Difference]: With dead ends: 33 [2021-10-11 00:23:02,876 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 00:23:02,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:23:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 00:23:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 00:23:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:23:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-11 00:23:02,881 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2021-10-11 00:23:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:02,881 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-11 00:23:02,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:23:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-11 00:23:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:23:02,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:02,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:03,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:03,098 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1411305246, now seen corresponding path program 2 times [2021-10-11 00:23:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:03,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480779443] [2021-10-11 00:23:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:03,111 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630824178] [2021-10-11 00:23:03,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:03,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:23:03,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:23:03,188 WARN L261 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-11 00:23:03,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:03,696 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:03,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480779443] [2021-10-11 00:23:03,724 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:23:03,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630824178] [2021-10-11 00:23:03,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:03,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-11 00:23:03,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622307006] [2021-10-11 00:23:03,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:23:03,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:03,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:23:03,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:23:03,727 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2021-10-11 00:23:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:04,025 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-11 00:23:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:23:04,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2021-10-11 00:23:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:04,026 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:23:04,026 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:23:04,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:23:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:23:04,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:23:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:23:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:23:04,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-11 00:23:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:04,027 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:04,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:23:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:23:04,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:23:04,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:04,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:23:04,607 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-10-11 00:23:04,874 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L265 CegarLoopResult]: At program point L52(lines 21 53) the Hoare annotation is: true [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L40(lines 40 45) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2021-10-11 00:23:04,878 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L258 CegarLoopResult]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_main_~X~0 1)) (.cse2 (= ULTIMATE.start_main_~y~0 0)) (.cse5 (<= 0 ULTIMATE.start_main_~Y~0)) (.cse4 (* ULTIMATE.start_main_~Y~0 4)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse7 (<= 0 ULTIMATE.start_main_~X~0)) (.cse6 (<= ULTIMATE.start_main_~Y~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~Y~0)) .cse2 .cse3 (= .cse4 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) .cse5) (and .cse0 (= ULTIMATE.start_main_~x~0 2) (= ULTIMATE.start_main_~y~0 2) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) .cse1 (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 5)) (* ULTIMATE.start_main_~Y~0 6)) .cse6 .cse3 .cse5) (and (= ULTIMATE.start_main_~x~0 0) .cse1 .cse7 (= (+ (* (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0) 2) (* ULTIMATE.start_main_~Y~0 2)) (+ ULTIMATE.start_main_~v~0 (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0) 2) ULTIMATE.start_main_~X~0)) .cse6 .cse2 .cse3 .cse5) (and (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 3)) .cse4) (exists ((ULTIMATE.start_main_~Y~0 Int) (ULTIMATE.start_main_~X~0 Int)) (and (<= ULTIMATE.start_main_~X~0 1) (<= 0 ULTIMATE.start_main_~X~0) (<= (* 4 ULTIMATE.start_main_~Y~0) (+ ULTIMATE.start_main_~v~0 (* 3 ULTIMATE.start_main_~X~0))) (<= ULTIMATE.start_main_~X~0 (* 2 ULTIMATE.start_main_~Y~0)))) (= ULTIMATE.start_main_~x~0 1) .cse0 .cse7 .cse6 (= ULTIMATE.start_main_~y~0 1) .cse3))) [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:23:04,879 INFO L262 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-10-11 00:23:04,880 INFO L258 CegarLoopResult]: At program point L14-2(lines 36 37) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_main_~X~0 1)) (.cse2 (= ULTIMATE.start_main_~y~0 0)) (.cse4 (<= 0 ULTIMATE.start_main_~Y~0)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 0 ULTIMATE.start_main_~X~0)) (.cse7 (= (+ (* (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0) 2) (* ULTIMATE.start_main_~Y~0 2)) (+ ULTIMATE.start_main_~v~0 (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0) 2) ULTIMATE.start_main_~X~0))) (.cse5 (<= ULTIMATE.start_main_~Y~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~Y~0)) .cse2 .cse3 (= (* ULTIMATE.start_main_~Y~0 4) (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) .cse4) (and .cse0 (= ULTIMATE.start_main_~x~0 2) (= ULTIMATE.start_main_~y~0 2) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) .cse1 (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 5)) (* ULTIMATE.start_main_~Y~0 6)) .cse5 .cse3 .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~x~0 0) .cse6 .cse7 .cse5 .cse2 .cse3 .cse4) (and (exists ((ULTIMATE.start_main_~Y~0 Int) (ULTIMATE.start_main_~X~0 Int)) (and (<= ULTIMATE.start_main_~X~0 1) (<= 0 ULTIMATE.start_main_~X~0) (<= (* 4 ULTIMATE.start_main_~Y~0) (+ ULTIMATE.start_main_~v~0 (* 3 ULTIMATE.start_main_~X~0))) (<= ULTIMATE.start_main_~X~0 (* 2 ULTIMATE.start_main_~Y~0)))) (= ULTIMATE.start_main_~x~0 1) .cse0 .cse6 .cse7 .cse5 (= ULTIMATE.start_main_~y~0 1) .cse3))) [2021-10-11 00:23:04,880 INFO L262 CegarLoopResult]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2021-10-11 00:23:04,880 INFO L262 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-10-11 00:23:04,880 INFO L262 CegarLoopResult]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-10-11 00:23:04,880 INFO L265 CegarLoopResult]: At program point L14-5(lines 13 19) the Hoare annotation is: true [2021-10-11 00:23:04,889 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,889 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,890 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,890 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,890 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,890 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:04,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:04,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:04 BoogieIcfgContainer [2021-10-11 00:23:04,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:04,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:04,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:04,911 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:04,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:58" (3/4) ... [2021-10-11 00:23:04,915 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:23:04,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 00:23:04,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:23:04,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:04,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:04,957 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((1 == cond && X <= 1) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && 0 <= Y)) || (((((((x == 0 && X <= 1) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y)) || (((((((v + X * 3 == Y * 4 && (\exists ULTIMATE.start_main_~Y~0 : int, ULTIMATE.start_main_~X~0 : int :: ((ULTIMATE.start_main_~X~0 <= 1 && 0 <= ULTIMATE.start_main_~X~0) && 4 * ULTIMATE.start_main_~Y~0 <= v + 3 * ULTIMATE.start_main_~X~0) && ULTIMATE.start_main_~X~0 <= 2 * ULTIMATE.start_main_~Y~0)) && x == 1) && 1 == cond) && 0 <= X) && Y <= 1) && y == 1) && cond == 1) [2021-10-11 00:23:04,958 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((1 == cond && X <= 1) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && 0 <= Y)) || ((((((((1 == cond && X <= 1) && x == 0) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y)) || ((((((((\exists ULTIMATE.start_main_~Y~0 : int, ULTIMATE.start_main_~X~0 : int :: ((ULTIMATE.start_main_~X~0 <= 1 && 0 <= ULTIMATE.start_main_~X~0) && 4 * ULTIMATE.start_main_~Y~0 <= v + 3 * ULTIMATE.start_main_~X~0) && ULTIMATE.start_main_~X~0 <= 2 * ULTIMATE.start_main_~Y~0) && x == 1) && 1 == cond) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 1) && cond == 1) [2021-10-11 00:23:04,989 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26745603-d57b-4425-b07f-f37583e98d3f/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:04,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:04,990 INFO L168 Benchmark]: Toolchain (without parser) took 7544.32 ms. Allocated memory was 100.7 MB in the beginning and 169.9 MB in the end (delta: 69.2 MB). Free memory was 67.4 MB in the beginning and 80.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,991 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:04,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 100.7 MB. Free memory was 67.2 MB in the beginning and 75.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.84 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:04,992 INFO L168 Benchmark]: Boogie Preprocessor took 21.66 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,993 INFO L168 Benchmark]: RCFGBuilder took 408.35 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 59.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,994 INFO L168 Benchmark]: TraceAbstraction took 6717.28 ms. Allocated memory was 100.7 MB in the beginning and 169.9 MB in the end (delta: 69.2 MB). Free memory was 58.8 MB in the beginning and 83.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,994 INFO L168 Benchmark]: Witness Printer took 78.27 ms. Allocated memory is still 169.9 MB. Free memory was 83.8 MB in the beginning and 80.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:04,998 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 100.7 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 100.7 MB. Free memory was 67.2 MB in the beginning and 75.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.84 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.66 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 408.35 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 59.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6717.28 ms. Allocated memory was 100.7 MB in the beginning and 169.9 MB in the end (delta: 69.2 MB). Free memory was 58.8 MB in the beginning and 83.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. * Witness Printer took 78.27 ms. Allocated memory is still 169.9 MB. Free memory was 83.8 MB in the beginning and 80.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant [2021-10-11 00:23:05,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,017 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,017 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,017 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,017 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] Derived loop invariant: ((((((((1 == cond && X <= 1) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && 0 <= Y)) || ((((((((1 == cond && X <= 1) && x == 0) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y)) || ((((((((\exists ULTIMATE.start_main_~Y~0 : int, ULTIMATE.start_main_~X~0 : int :: ((ULTIMATE.start_main_~X~0 <= 1 && 0 <= ULTIMATE.start_main_~X~0) && 4 * ULTIMATE.start_main_~Y~0 <= v + 3 * ULTIMATE.start_main_~X~0) && ULTIMATE.start_main_~X~0 <= 2 * ULTIMATE.start_main_~Y~0) && x == 1) && 1 == cond) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 1) && cond == 1) - InvariantResult [Line: 32]: Loop Invariant [2021-10-11 00:23:05,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] [2021-10-11 00:23:05,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~X~0,QUANTIFIED] [2021-10-11 00:23:05,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0,QUANTIFIED] Derived loop invariant: ((((((((1 == cond && X <= 1) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && 0 <= Y)) || (((((((x == 0 && X <= 1) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y)) || (((((((v + X * 3 == Y * 4 && (\exists ULTIMATE.start_main_~Y~0 : int, ULTIMATE.start_main_~X~0 : int :: ((ULTIMATE.start_main_~X~0 <= 1 && 0 <= ULTIMATE.start_main_~X~0) && 4 * ULTIMATE.start_main_~Y~0 <= v + 3 * ULTIMATE.start_main_~X~0) && ULTIMATE.start_main_~X~0 <= 2 * ULTIMATE.start_main_~Y~0)) && x == 1) && 1 == cond) && 0 <= X) && Y <= 1) && y == 1) && cond == 1) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 231 SDslu, 151 SDs, 0 SdLazy, 421 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=5, 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, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 324 HoareAnnotationTreeSize, 4 FomulaSimplifications, 297 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 132 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 124 ConstructedInterpolants, 5 QuantifiedInterpolants, 24626 SizeOfPredicates, 80 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 19/41 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 correct! Received shutdown request...