./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer --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 b3bfce9b07227c60fd873a49b64f66306f8aea80 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:40:14,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:40:14,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:40:14,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:40:14,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:40:14,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:40:14,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:40:14,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:40:14,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:40:14,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:40:14,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:40:14,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:40:14,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:40:14,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:40:14,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:40:14,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:40:14,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:40:15,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:40:15,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:40:15,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:40:15,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:40:15,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:40:15,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:40:15,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:40:15,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:40:15,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:40:15,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:40:15,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:40:15,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:40:15,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:40:15,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:40:15,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:40:15,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:40:15,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:40:15,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:40:15,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:40:15,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:40:15,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:40:15,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:40:15,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:40:15,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:40:15,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:40:15,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:40:15,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:40:15,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:40:15,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:40:15,113 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:40:15,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:40:15,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:40:15,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:40:15,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:40:15,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:40:15,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:40:15,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:40:15,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:40:15,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:40:15,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:40:15,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:40:15,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:40:15,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:40:15,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:40:15,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:40:15,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:40:15,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:40:15,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:40:15,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:40:15,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:40:15,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:40:15,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:40:15,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:40:15,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:40:15,124 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-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3bfce9b07227c60fd873a49b64f66306f8aea80 [2020-11-29 23:40:15,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:40:15,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:40:15,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:40:15,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:40:15,507 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:40:15,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2020-11-29 23:40:15,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/data/e4d472d27/294567b62c2c4abaa701a00c8fb8709e/FLAG5d0652986 [2020-11-29 23:40:16,183 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:40:16,184 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2020-11-29 23:40:16,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/data/e4d472d27/294567b62c2c4abaa701a00c8fb8709e/FLAG5d0652986 [2020-11-29 23:40:16,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/data/e4d472d27/294567b62c2c4abaa701a00c8fb8709e [2020-11-29 23:40:16,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:40:16,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:40:16,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:40:16,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:40:16,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:40:16,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11819b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16, skipping insertion in model container [2020-11-29 23:40:16,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:40:16,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:40:16,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:40:16,852 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:40:16,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:40:16,927 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:40:16,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16 WrapperNode [2020-11-29 23:40:16,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:40:16,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:40:16,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:40:16,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:40:16,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:40:16,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:40:16,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:40:16,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:40:16,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... [2020-11-29 23:40:16,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:40:16,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:40:16,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:40:16,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:40:16,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:40:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:40:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:40:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:40:17,376 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:40:17,377 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 23:40:17,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:40:17 BoogieIcfgContainer [2020-11-29 23:40:17,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:40:17,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:40:17,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:40:17,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:40:17,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:40:16" (1/3) ... [2020-11-29 23:40:17,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682580f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:40:17, skipping insertion in model container [2020-11-29 23:40:17,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:40:16" (2/3) ... [2020-11-29 23:40:17,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682580f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:40:17, skipping insertion in model container [2020-11-29 23:40:17,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:40:17" (3/3) ... [2020-11-29 23:40:17,390 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound5.c [2020-11-29 23:40:17,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:40:17,408 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 23:40:17,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 23:40:17,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:40:17,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:40:17,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:40:17,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:40:17,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:40:17,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:40:17,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:40:17,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:40:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 23:40:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:40:17,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:17,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:17,536 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:17,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:17,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-29 23:40:17,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:17,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780174606] [2020-11-29 23:40:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:40:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:40:17,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780174606] [2020-11-29 23:40:17,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:40:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:40:17,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857310957] [2020-11-29 23:40:17,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:40:17,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:17,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:40:17,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:40:17,765 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-29 23:40:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:17,785 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-11-29 23:40:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:40:17,787 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:40:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:17,797 INFO L225 Difference]: With dead ends: 37 [2020-11-29 23:40:17,798 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 23:40:17,801 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 [2020-11-29 23:40:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 23:40:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 23:40:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 23:40:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 23:40:17,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2020-11-29 23:40:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:17,843 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 23:40:17,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:40:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 23:40:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:40:17,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:17,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:17,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:40:17,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-29 23:40:17,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:17,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550309050] [2020-11-29 23:40:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:17,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:17,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959287875] [2020-11-29 23:40:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:40:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:40:17,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:40:18,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550309050] [2020-11-29 23:40:18,099 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:18,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959287875] [2020-11-29 23:40:18,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:40:18,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:40:18,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633332699] [2020-11-29 23:40:18,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:40:18,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:40:18,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:40:18,104 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-11-29 23:40:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:18,229 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 23:40:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:40:18,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:40:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:18,232 INFO L225 Difference]: With dead ends: 30 [2020-11-29 23:40:18,232 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:40:18,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:40:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:40:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 23:40:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:40:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-29 23:40:18,242 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-29 23:40:18,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:18,243 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-29 23:40:18,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:40:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-29 23:40:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:40:18,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:18,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:18,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:40:18,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:18,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1811972666, now seen corresponding path program 1 times [2020-11-29 23:40:18,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:18,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719275915] [2020-11-29 23:40:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:18,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:18,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179198669] [2020-11-29 23:40:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:40:18,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:40:18,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:40:18,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719275915] [2020-11-29 23:40:18,768 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:18,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179198669] [2020-11-29 23:40:18,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:40:18,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:40:18,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135403885] [2020-11-29 23:40:18,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:40:18,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:18,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:40:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:40:18,772 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-29 23:40:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:21,470 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-29 23:40:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:40:21,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 23:40:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:21,475 INFO L225 Difference]: With dead ends: 30 [2020-11-29 23:40:21,475 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:40:21,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:40:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:40:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-29 23:40:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:40:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-29 23:40:21,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-11-29 23:40:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:21,483 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-29 23:40:21,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:40:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-29 23:40:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:40:21,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:21,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:21,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:40:21,708 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 336535162, now seen corresponding path program 1 times [2020-11-29 23:40:21,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:21,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537323879] [2020-11-29 23:40:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:21,733 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:21,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305250155] [2020-11-29 23:40:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:40:21,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:40:21,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:40:21,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537323879] [2020-11-29 23:40:21,850 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:21,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305250155] [2020-11-29 23:40:21,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:40:21,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 23:40:21,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759567012] [2020-11-29 23:40:21,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:40:21,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:21,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:40:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:40:21,853 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-29 23:40:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:21,911 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-29 23:40:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:40:21,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 23:40:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:21,913 INFO L225 Difference]: With dead ends: 27 [2020-11-29 23:40:21,913 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:40:21,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:40:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:40:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:40:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:40:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 23:40:21,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-11-29 23:40:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:21,928 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 23:40:21,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:40:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 23:40:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:40:21,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:21,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:22,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:40:22,130 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:22,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1334571699, now seen corresponding path program 1 times [2020-11-29 23:40:22,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:22,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905744527] [2020-11-29 23:40:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:22,153 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:22,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478231096] [2020-11-29 23:40:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:40:22,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:40:22,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:22,284 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:40:22,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:40:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 23:40:22,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905744527] [2020-11-29 23:40:22,370 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:22,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478231096] [2020-11-29 23:40:22,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:40:22,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:40:22,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475369577] [2020-11-29 23:40:22,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:40:22,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:22,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:40:22,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:40:22,373 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-29 23:40:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:26,637 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 23:40:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:40:26,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 23:40:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:26,642 INFO L225 Difference]: With dead ends: 27 [2020-11-29 23:40:26,642 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:40:26,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:40:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:40:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:40:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:40:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 23:40:26,653 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-11-29 23:40:26,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:26,653 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 23:40:26,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:40:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 23:40:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:40:26,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:26,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:26,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:40:26,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:26,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1576870778, now seen corresponding path program 2 times [2020-11-29 23:40:26,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:26,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654887612] [2020-11-29 23:40:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:26,905 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:26,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662446150] [2020-11-29 23:40:26,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:26,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:40:26,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:40:26,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 23:40:26,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:27,023 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:40:27,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:40:29,146 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)) (<= 1 c_ULTIMATE.start_main_~z~0)) is different from false [2020-11-29 23:40:29,151 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:40:29,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:40:35,315 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 23:40:35,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:40:35,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:40:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 23:40:35,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654887612] [2020-11-29 23:40:35,521 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:35,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662446150] [2020-11-29 23:40:35,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:40:35,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 23:40:35,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887973063] [2020-11-29 23:40:35,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:40:35,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:40:35,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=52, Unknown=2, NotChecked=14, Total=90 [2020-11-29 23:40:35,523 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-29 23:40:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:58,851 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-29 23:40:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:40:58,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 23:40:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:58,855 INFO L225 Difference]: With dead ends: 37 [2020-11-29 23:40:58,855 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 23:40:58,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=48, Invalid=135, Unknown=3, NotChecked=24, Total=210 [2020-11-29 23:40:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 23:40:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2020-11-29 23:40:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 23:40:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-29 23:40:58,862 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2020-11-29 23:40:58,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:58,862 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-29 23:40:58,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:40:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-29 23:40:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:40:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:58,864 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:59,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:40:59,071 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:59,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1638396498, now seen corresponding path program 2 times [2020-11-29 23:40:59,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:59,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250270458] [2020-11-29 23:40:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:59,085 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:59,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069512123] [2020-11-29 23:40:59,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:59,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:40:59,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:40:59,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:40:59,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:40:59,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250270458] [2020-11-29 23:40:59,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:40:59,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069512123] [2020-11-29 23:40:59,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:40:59,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:40:59,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313891531] [2020-11-29 23:40:59,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:40:59,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:40:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:40:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:40:59,227 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-11-29 23:40:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:40:59,346 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-29 23:40:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:40:59,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 23:40:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:40:59,348 INFO L225 Difference]: With dead ends: 31 [2020-11-29 23:40:59,348 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 23:40:59,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:40:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 23:40:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 23:40:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 23:40:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-29 23:40:59,357 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-11-29 23:40:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:40:59,358 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-29 23:40:59,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:40:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-29 23:40:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:40:59,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:40:59,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:40:59,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:40:59,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:40:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:40:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash -8965934, now seen corresponding path program 3 times [2020-11-29 23:40:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:40:59,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918269780] [2020-11-29 23:40:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:40:59,579 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:40:59,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51884302] [2020-11-29 23:40:59,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/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 [2020-11-29 23:40:59,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 23:40:59,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:40:59,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 23:40:59,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:40:59,705 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:40:59,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:02,765 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:41:02,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:02,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 23:41:02,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918269780] [2020-11-29 23:41:02,827 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:41:02,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51884302] [2020-11-29 23:41:02,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:41:02,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:41:02,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029735011] [2020-11-29 23:41:02,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:41:02,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:41:02,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:41:02,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-29 23:41:02,830 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2020-11-29 23:41:13,168 WARN L193 SmtUtils]: Spent 9.99 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 23:41:28,963 WARN L193 SmtUtils]: Spent 15.76 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 23:41:33,474 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 23:41:49,054 WARN L193 SmtUtils]: Spent 13.50 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:41:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:41:50,489 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 23:41:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:41:50,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 23:41:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:41:50,492 INFO L225 Difference]: With dead ends: 27 [2020-11-29 23:41:50,492 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 23:41:50,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=1, NotChecked=0, Total=90 [2020-11-29 23:41:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 23:41:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-29 23:41:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:41:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 23:41:50,498 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2020-11-29 23:41:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:41:50,499 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 23:41:50,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:41:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 23:41:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 23:41:50,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:41:50,500 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:41:50,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:41:50,700 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:41:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:41:50,701 INFO L82 PathProgramCache]: Analyzing trace with hash -277986590, now seen corresponding path program 3 times [2020-11-29 23:41:50,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:41:50,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281360871] [2020-11-29 23:41:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:41:50,718 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:41:50,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349533012] [2020-11-29 23:41:50,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:41:50,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 23:41:50,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:41:50,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:41:50,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:41:50,815 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:41:50,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,603 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:41:54,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,653 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 23:41:54,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:54,669 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:41:59,696 WARN L193 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 23:42:14,437 WARN L193 SmtUtils]: Spent 14.74 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:42:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 23:42:17,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281360871] [2020-11-29 23:42:17,335 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:42:17,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349533012] [2020-11-29 23:42:17,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:42:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:42:17,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192875234] [2020-11-29 23:42:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:42:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:42:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:42:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:42:17,336 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-29 23:42:34,629 WARN L193 SmtUtils]: Spent 16.94 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 23:42:52,263 WARN L193 SmtUtils]: Spent 17.60 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 23:43:20,249 WARN L193 SmtUtils]: Spent 22.92 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:43:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:43:22,663 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 23:43:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:43:22,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 23:43:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:43:22,678 INFO L225 Difference]: With dead ends: 24 [2020-11-29 23:43:22,678 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:43:22,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:43:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:43:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:43:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:43:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:43:22,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-29 23:43:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:43:22,679 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:43:22,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:43:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:43:22,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:43:22,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 23:43:22,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:43:39,563 WARN L193 SmtUtils]: Spent 16.64 s on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 23:43:46,351 WARN L193 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-11-29 23:43:46,356 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0)))) [2020-11-29 23:43:46,356 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2020-11-29 23:43:46,356 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 23:43:46,356 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:43:46,356 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:43:46,356 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L270 CegarLoopResult]: At program point L16-1(lines 38 39) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~z~0))) [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L277 CegarLoopResult]: At program point L50(lines 23 51) the Hoare annotation is: true [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 23:43:46,357 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2020-11-29 23:43:46,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:43:46 BoogieIcfgContainer [2020-11-29 23:43:46,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:43:46,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:43:46,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:43:46,383 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:43:46,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:40:17" (3/4) ... [2020-11-29 23:43:46,387 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:43:46,398 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 23:43:46,398 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:43:46,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:43:46,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:43:46,448 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2b98b94-1217-4347-886d-72897bce5471/bin/uautomizer/witness.graphml [2020-11-29 23:43:46,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:43:46,449 INFO L168 Benchmark]: Toolchain (without parser) took 209909.65 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 46.8 MB in the beginning and 86.6 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:43:46,449 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 63.7 MB in the beginning and 63.5 MB in the end (delta: 159.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:43:46,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.20 ms. Allocated memory is still 102.8 MB. Free memory was 46.6 MB in the beginning and 80.1 MB in the end (delta: -33.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:43:46,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.86 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:43:46,450 INFO L168 Benchmark]: Boogie Preprocessor took 27.51 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 77.6 MB in the end (delta: 940.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:43:46,451 INFO L168 Benchmark]: RCFGBuilder took 381.69 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 64.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:43:46,451 INFO L168 Benchmark]: TraceAbstraction took 209000.97 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 89.7 MB in the end (delta: -25.8 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:43:46,452 INFO L168 Benchmark]: Witness Printer took 65.56 ms. Allocated memory is still 123.7 MB. Free memory was 89.7 MB in the beginning and 86.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:43:46,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 63.7 MB in the beginning and 63.5 MB in the end (delta: 159.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 384.20 ms. Allocated memory is still 102.8 MB. Free memory was 46.6 MB in the beginning and 80.1 MB in the end (delta: -33.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.86 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.51 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 77.6 MB in the end (delta: 940.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.69 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 64.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 209000.97 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 89.7 MB in the end (delta: -25.8 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. * Witness Printer took 65.56 ms. Allocated memory is still 123.7 MB. Free memory was 89.7 MB in the beginning and 86.6 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.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && z * x + 1 == x + y) && (x + -1) % z == 0) && 1 == cond) && 1 <= z - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((x == 1 && counter <= 0) && z == y) && 1 <= c) && 1 <= z) || ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && (x + -1) % z == 0) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 185.3s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 143.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 100 SDslu, 260 SDs, 0 SdLazy, 179 SolverSat, 33 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 41.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 117.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, 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, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 96 HoareAnnotationTreeSize, 4 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 23.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.8s InterpolantComputationTime, 148 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 13901 SizeOfPredicates, 46 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 42/66 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...