./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be --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 ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:11:08,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:11:08,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:11:08,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:11:08,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:11:08,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:11:08,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:11:08,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:11:08,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:11:08,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:11:08,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:11:08,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:11:08,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:11:08,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:11:08,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:11:08,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:11:08,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:11:08,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:11:08,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:11:08,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:11:08,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:11:08,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:11:08,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:11:08,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:11:08,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:11:08,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:11:08,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:11:08,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:11:08,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:11:08,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:11:08,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:11:08,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:11:08,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:11:08,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:11:08,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:11:08,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:11:08,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:11:08,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:11:08,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:11:08,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:11:08,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:11:08,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:11:09,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:11:09,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:11:09,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:11:09,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:11:09,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:11:09,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:11:09,027 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:11:09,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:11:09,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:11:09,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:11:09,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:11:09,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:11:09,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:11:09,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:11:09,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:11:09,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:11:09,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:11:09,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:11:09,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:11:09,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:11:09,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:11:09,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:11:09,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:11:09,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:11:09,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:11:09,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:11:09,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:11:09,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:11:09,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:11:09,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:11:09,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:11:09,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:11:09,035 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_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f [2021-10-21 19:11:09,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:11:09,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:11:09,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:11:09,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:11:09,307 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:11:09,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2021-10-21 19:11:09,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/data/b7ccba34b/5d40c953478540e09ced895bfc837bcd/FLAG250f80212 [2021-10-21 19:11:09,875 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:11:09,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2021-10-21 19:11:09,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/data/b7ccba34b/5d40c953478540e09ced895bfc837bcd/FLAG250f80212 [2021-10-21 19:11:10,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/data/b7ccba34b/5d40c953478540e09ced895bfc837bcd [2021-10-21 19:11:10,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:11:10,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:11:10,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:11:10,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:11:10,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:11:10,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6734d092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10, skipping insertion in model container [2021-10-21 19:11:10,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:11:10,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:11:10,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c[537,550] [2021-10-21 19:11:10,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:11:10,519 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:11:10,540 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c[537,550] [2021-10-21 19:11:10,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:11:10,576 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:11:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10 WrapperNode [2021-10-21 19:11:10,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:11:10,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:11:10,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:11:10,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:11:10,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:11:10,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:11:10,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:11:10,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:11:10,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:11:10,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:11:10,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:11:10,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:11:10,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (1/1) ... [2021-10-21 19:11:10,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:11:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:10,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:10,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:11:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:11:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:11:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:11:10,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:11:10,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:11:11,000 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-21 19:11:11,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:11 BoogieIcfgContainer [2021-10-21 19:11:11,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:11:11,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:11:11,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:11:11,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:11:11,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:11:10" (1/3) ... [2021-10-21 19:11:11,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0fdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:11:11, skipping insertion in model container [2021-10-21 19:11:11,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:10" (2/3) ... [2021-10-21 19:11:11,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0fdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:11:11, skipping insertion in model container [2021-10-21 19:11:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:11" (3/3) ... [2021-10-21 19:11:11,021 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2021-10-21 19:11:11,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:11:11,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 19:11:11,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:11:11,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:11:11,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 19:11:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:11:11,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:11,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:11,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:11,161 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-21 19:11:11,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:11,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832571957] [2021-10-21 19:11:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:11,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:11,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:11,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832571957] [2021-10-21 19:11:11,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832571957] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:11:11,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:11:11,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:11:11,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114970556] [2021-10-21 19:11:11,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:11:11,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:11:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:11:11,324 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:11,340 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-21 19:11:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:11:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 19:11:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:11,349 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:11:11,349 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 19:11:11,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:11:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 19:11:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 19:11:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-21 19:11:11,380 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-10-21 19:11:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:11,381 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-21 19:11:11,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-21 19:11:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:11:11,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:11,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:11,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:11:11,382 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:11,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-21 19:11:11,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:11,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049970076] [2021-10-21 19:11:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:11,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:11,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:11,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983849487] [2021-10-21 19:11:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:11,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:11,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:11,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:11:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:11,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:11:11,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:11,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:11,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049970076] [2021-10-21 19:11:11,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:11,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983849487] [2021-10-21 19:11:11,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983849487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:11:11,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:11:11,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:11:11,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989138364] [2021-10-21 19:11:11,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:11:11,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:11:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:11:11,641 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:11,725 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-21 19:11:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:11:11,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 19:11:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:11,727 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:11:11,728 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:11:11,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:11:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:11:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-10-21 19:11:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-21 19:11:11,766 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2021-10-21 19:11:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:11,767 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-21 19:11:11,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-21 19:11:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:11:11,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:11,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:11,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:11,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:11,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2021-10-21 19:11:11,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:11,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81790817] [2021-10-21 19:11:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:11,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:12,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:12,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806756198] [2021-10-21 19:11:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:12,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:12,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:12,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:11:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:12,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:11:12,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:12,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:12,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81790817] [2021-10-21 19:11:12,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:12,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806756198] [2021-10-21 19:11:12,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806756198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:11:12,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:11:12,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:11:12,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079113434] [2021-10-21 19:11:12,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:11:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:11:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:11:12,196 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:12,262 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-21 19:11:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:11:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 19:11:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:12,264 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:11:12,264 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 19:11:12,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:11:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 19:11:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-21 19:11:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-21 19:11:12,269 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-10-21 19:11:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:12,270 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-21 19:11:12,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-21 19:11:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:11:12,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:12,271 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:12,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:12,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:12,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2021-10-21 19:11:12,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:12,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754653321] [2021-10-21 19:11:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:12,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:12,527 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:12,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109666158] [2021-10-21 19:11:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:12,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:12,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:11:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:12,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:11:12,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:16,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:16,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754653321] [2021-10-21 19:11:16,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:16,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109666158] [2021-10-21 19:11:16,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109666158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:16,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:11:16,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:11:16,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338805030] [2021-10-21 19:11:16,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:11:16,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:16,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:11:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:11:16,649 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:17,244 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-21 19:11:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:11:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:11:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:17,245 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:11:17,246 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 19:11:17,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:11:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 19:11:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2021-10-21 19:11:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-21 19:11:17,251 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2021-10-21 19:11:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:17,252 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-21 19:11:17,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-21 19:11:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:11:17,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:17,253 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:17,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:17,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:17,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2021-10-21 19:11:17,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:17,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006886872] [2021-10-21 19:11:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:17,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:17,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:17,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753860416] [2021-10-21 19:11:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:17,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:17,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:17,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:17,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:11:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:17,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:11:17,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:18,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:18,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006886872] [2021-10-21 19:11:18,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:18,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753860416] [2021-10-21 19:11:18,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753860416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:18,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:11:18,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:11:18,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391990623] [2021-10-21 19:11:18,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:11:18,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:11:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:11:18,962 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:19,237 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-21 19:11:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:11:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:11:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:19,239 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:11:19,239 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 19:11:19,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 249.1ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:11:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 19:11:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-21 19:11:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-21 19:11:19,246 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2021-10-21 19:11:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:19,246 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-21 19:11:19,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-21 19:11:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:11:19,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:19,247 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:19,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:19,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:19,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:19,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2021-10-21 19:11:19,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:19,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565239521] [2021-10-21 19:11:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:19,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:19,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:19,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014733873] [2021-10-21 19:11:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:19,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:19,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:19,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:11:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:19,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:11:19,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:11:19,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:19,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565239521] [2021-10-21 19:11:19,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:19,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014733873] [2021-10-21 19:11:19,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014733873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:11:19,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:11:19,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:11:19,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257525812] [2021-10-21 19:11:19,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:11:19,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:11:19,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:11:19,757 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:23,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:23,213 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-21 19:11:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:11:23,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-21 19:11:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:23,214 INFO L225 Difference]: With dead ends: 31 [2021-10-21 19:11:23,214 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 19:11:23,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 161.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:11:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 19:11:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-21 19:11:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-21 19:11:23,219 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-10-21 19:11:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:23,220 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-21 19:11:23,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-21 19:11:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:11:23,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:23,222 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:23,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:23,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:11:23,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,442 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2021-10-21 19:11:23,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605060064] [2021-10-21 19:11:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:23,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471508040] [2021-10-21 19:11:23,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:11:23,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:23,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:23,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:23,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:11:23,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:11:23,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:23,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:11:23,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:34,537 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 c_ULTIMATE.start_main_~b~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~z~0) (= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~z~0)) (<= 1 (mod c_ULTIMATE.start_main_~b~0 2)) (or (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (not (= (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0) (+ c_ULTIMATE.start_main_~z~0 (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0))))) (= c_ULTIMATE.start_main_~y~0 (div (+ (- 1) c_ULTIMATE.start_main_~b~0) 2))) is different from false [2021-10-21 19:11:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-21 19:11:45,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:45,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605060064] [2021-10-21 19:11:45,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:11:45,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471508040] [2021-10-21 19:11:45,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471508040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:45,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:11:45,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:11:45,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661984300] [2021-10-21 19:11:45,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:11:45,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:11:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2021-10-21 19:11:45,374 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:53,934 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-10-21 19:11:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:11:53,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:11:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:11:53,936 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:11:53,936 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 19:11:53,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 8209.6ms TimeCoverageRelationStatistics Valid=58, Invalid=250, Unknown=2, NotChecked=32, Total=342 [2021-10-21 19:11:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 19:11:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-21 19:11:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-21 19:11:53,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-21 19:11:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:11:53,943 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-21 19:11:53,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:11:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-21 19:11:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:11:53,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:11:53,944 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:53,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:54,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:11:54,170 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:11:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -183023109, now seen corresponding path program 1 times [2021-10-21 19:11:54,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:54,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780754651] [2021-10-21 19:11:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:54,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:54,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:11:54,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701122037] [2021-10-21 19:11:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:54,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:54,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:54,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:11:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:54,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 19:11:54,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:00,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:00,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780754651] [2021-10-21 19:12:00,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:00,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701122037] [2021-10-21 19:12:00,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701122037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:00,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:00,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:12:00,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238013251] [2021-10-21 19:12:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:12:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:00,931 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:03,762 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-21 19:12:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:03,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:12:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:03,763 INFO L225 Difference]: With dead ends: 37 [2021-10-21 19:12:03,763 INFO L226 Difference]: Without dead ends: 35 [2021-10-21 19:12:03,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 431.7ms TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:12:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-21 19:12:03,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-10-21 19:12:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-21 19:12:03,769 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-21 19:12:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:03,770 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-21 19:12:03,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-21 19:12:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:12:03,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:03,771 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:03,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:03,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:12:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:03,994 INFO L82 PathProgramCache]: Analyzing trace with hash -577897161, now seen corresponding path program 2 times [2021-10-21 19:12:03,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:03,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564435432] [2021-10-21 19:12:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:03,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:04,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:12:04,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44576358] [2021-10-21 19:12:04,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:04,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:04,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:04,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:12:04,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:04,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:04,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:12:04,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:07,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:07,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564435432] [2021-10-21 19:12:07,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:07,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44576358] [2021-10-21 19:12:07,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44576358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:07,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:07,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:12:07,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324082807] [2021-10-21 19:12:07,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:12:07,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:12:07,229 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:07,783 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-10-21 19:12:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:12:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:07,785 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:12:07,785 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:12:07,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 360.2ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:12:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:12:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2021-10-21 19:12:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-21 19:12:07,792 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2021-10-21 19:12:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:07,793 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-21 19:12:07,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-21 19:12:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:12:07,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:07,795 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:07,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:08,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:08,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:12:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash -576050119, now seen corresponding path program 2 times [2021-10-21 19:12:08,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:08,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337555156] [2021-10-21 19:12:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:08,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:08,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:12:08,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905240109] [2021-10-21 19:12:08,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:08,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:08,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:08,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:12:08,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:08,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:12:08,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:13,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337555156] [2021-10-21 19:12:13,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:13,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905240109] [2021-10-21 19:12:13,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905240109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:13,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:12:13,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650425514] [2021-10-21 19:12:13,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:12:13,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:12:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:13,059 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:13,422 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-10-21 19:12:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:12:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:13,423 INFO L225 Difference]: With dead ends: 44 [2021-10-21 19:12:13,423 INFO L226 Difference]: Without dead ends: 42 [2021-10-21 19:12:13,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 338.1ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:12:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-21 19:12:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2021-10-21 19:12:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-21 19:12:13,428 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-21 19:12:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:13,429 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-21 19:12:13,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-21 19:12:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:12:13,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:13,434 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:13,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:13,654 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:12:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,654 INFO L82 PathProgramCache]: Analyzing trace with hash 322246368, now seen corresponding path program 3 times [2021-10-21 19:12:13,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519125978] [2021-10-21 19:12:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:12:13,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315264543] [2021-10-21 19:12:13,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:13,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:13,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:13,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:13,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:12:13,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:12:13,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:13,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 19:12:13,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:12:15,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:15,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519125978] [2021-10-21 19:12:15,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:15,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315264543] [2021-10-21 19:12:15,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315264543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:15,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:15,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:12:15,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892175034] [2021-10-21 19:12:15,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:12:15,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:12:15,535 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:35,861 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-21 19:12:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:12:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:12:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:35,862 INFO L225 Difference]: With dead ends: 61 [2021-10-21 19:12:35,862 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:12:35,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 11319.0ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:12:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:12:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-21 19:12:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-21 19:12:35,869 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2021-10-21 19:12:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:35,869 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-21 19:12:35,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-10-21 19:12:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:12:35,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:35,871 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:35,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:36,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:36,094 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:12:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1350644320, now seen corresponding path program 3 times [2021-10-21 19:12:36,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:36,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041439156] [2021-10-21 19:12:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:36,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:36,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:12:36,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175094810] [2021-10-21 19:12:36,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:36,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:36,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:36,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:12:36,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:12:36,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:36,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:12:36,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:12:38,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:38,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041439156] [2021-10-21 19:12:38,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:38,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175094810] [2021-10-21 19:12:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175094810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:38,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:38,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:12:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970033471] [2021-10-21 19:12:38,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:12:38,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:12:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:38,085 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:43,022 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-21 19:12:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:43,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:12:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:43,024 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:12:43,024 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 19:12:43,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1882.1ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:12:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 19:12:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-21 19:12:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-21 19:12:43,031 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 26 [2021-10-21 19:12:43,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:43,031 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-21 19:12:43,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-21 19:12:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:12:43,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:43,033 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:43,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:43,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:12:43,250 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:12:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:43,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1348797278, now seen corresponding path program 3 times [2021-10-21 19:12:43,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:43,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593533819] [2021-10-21 19:12:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:43,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:43,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:12:43,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687281096] [2021-10-21 19:12:43,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:43,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:43,264 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:43,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:12:43,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:12:43,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:43,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:12:43,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:48,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:48,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593533819] [2021-10-21 19:12:48,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:12:48,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687281096] [2021-10-21 19:12:48,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687281096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:48,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:48,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-21 19:12:48,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090839404] [2021-10-21 19:12:48,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:12:48,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:12:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2021-10-21 19:12:48,393 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:00,964 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-10-21 19:13:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:13:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:13:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:00,965 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:13:00,965 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 19:13:00,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 12675.4ms TimeCoverageRelationStatistics Valid=174, Invalid=424, Unknown=2, NotChecked=0, Total=600 [2021-10-21 19:13:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 19:13:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-10-21 19:13:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-21 19:13:00,972 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2021-10-21 19:13:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:00,973 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-21 19:13:00,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-21 19:13:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 19:13:00,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:00,974 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:01,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:01,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:13:01,193 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:13:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash 920192473, now seen corresponding path program 4 times [2021-10-21 19:13:01,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:01,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837875746] [2021-10-21 19:13:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:01,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:01,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:13:01,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350327700] [2021-10-21 19:13:01,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:13:01,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:13:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:01,219 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:13:01,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:13:01,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:13:01,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:13:01,482 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 19:13:01,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:43,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:43,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837875746] [2021-10-21 19:13:43,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:13:43,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350327700] [2021-10-21 19:13:43,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350327700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:13:43,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:13:43,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-21 19:13:43,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660866089] [2021-10-21 19:13:43,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:13:43,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:13:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:13:43,882 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:45,619 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-21 19:13:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:13:45,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 19:13:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:45,621 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:13:45,621 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:13:45,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1458.2ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:13:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:13:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-10-21 19:13:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-21 19:13:45,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2021-10-21 19:13:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:45,630 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-21 19:13:45,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-21 19:13:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 19:13:45,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:45,632 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:45,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:45,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:13:45,854 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:13:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1070802690, now seen corresponding path program 5 times [2021-10-21 19:13:45,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:45,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062336804] [2021-10-21 19:13:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:45,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:45,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:13:45,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888392715] [2021-10-21 19:13:45,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:13:45,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:13:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:45,871 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:13:45,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:13:46,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:13:46,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:13:46,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:13:46,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:13:46,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:46,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062336804] [2021-10-21 19:13:46,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:13:46,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888392715] [2021-10-21 19:13:46,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888392715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:46,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:46,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-21 19:13:46,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537859736] [2021-10-21 19:13:46,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:13:46,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:13:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:13:46,687 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:47,194 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-21 19:13:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:13:47,210 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-21 19:13:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:47,210 INFO L225 Difference]: With dead ends: 37 [2021-10-21 19:13:47,211 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:13:47,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 503.0ms TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:13:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:13:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:13:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:13:47,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-21 19:13:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:47,213 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:13:47,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:13:47,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:13:47,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:13:47,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:13:47,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:47,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:13:47,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:13:47,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:13:47,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:13:47,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:13:47,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:14:02,490 WARN L207 SmtUtils]: Spent 14.84 s on a formula simplification. DAG size of input: 179 DAG size of output: 39 [2021-10-21 19:16:44,742 WARN L207 SmtUtils]: Spent 2.70 m on a formula simplification. DAG size of input: 218 DAG size of output: 178 [2021-10-21 19:16:44,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-21 19:16:44,747 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-21 19:16:44,747 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:16:44,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:16:44,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:16:44,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-21 19:16:44,748 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:16:44,748 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2021-10-21 19:16:44,748 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 36 37) the Hoare annotation is: (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= .cse5 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (or (= .cse5 ULTIMATE.start_main_~z~0) (and (not (= ULTIMATE.start_main_~y~0 0)) (= (mod (+ .cse5 (* ULTIMATE.start_main_~z~0 (- 1))) ULTIMATE.start_main_~y~0) 0))))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 .cse3 (<= ULTIMATE.start_main_~y~0 10) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0) .cse3 .cse4)))) [2021-10-21 19:16:44,748 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2021-10-21 19:16:44,749 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-21 19:16:44,749 INFO L857 garLoopResultBuilder]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2021-10-21 19:16:44,749 INFO L860 garLoopResultBuilder]: At program point L13-5(lines 12 18) the Hoare annotation is: true [2021-10-21 19:16:44,749 INFO L857 garLoopResultBuilder]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2021-10-21 19:16:44,750 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse35 (div (+ (- 1) ULTIMATE.start_main_~b~0) 2)) (.cse37 (mod ULTIMATE.start_main_~b~0 2)) (.cse6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse23 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2))) (.cse17 (div ULTIMATE.start_main_~b~0 2))) (let ((.cse1 (div .cse17 2)) (.cse13 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0)) (.cse7 (* ULTIMATE.start_main_~z~0 (- 1))) (.cse11 (* (- 1) ULTIMATE.start_main_~z~0)) (.cse12 (= .cse6 (+ ULTIMATE.start_main_~z~0 (* 2 (* .cse23 ULTIMATE.start_main_~y~0))))) (.cse15 (= ULTIMATE.start_main_~z~0 0)) (.cse16 (not (= .cse37 1))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse18 (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0))) (.cse14 (<= 1 ULTIMATE.start_main_~b~0)) (.cse36 (<= 1 .cse37)) (.cse34 (mod .cse35 2))) (or (let ((.cse9 (div ULTIMATE.start_main_~x~0 2))) (let ((.cse8 (* (- 2) ULTIMATE.start_main_~y~0 .cse9))) (let ((.cse10 (div (+ .cse6 .cse8 .cse11) .cse9))) (and (= (* 8 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~y~0 (div .cse1 2)) .cse2 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_37_37 Int)) (let ((.cse4 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_37_37)) (.cse3 (+ (* 2 ULTIMATE.start_main_~y~0) (let ((.cse5 (div ULTIMATE.start_main_~x~0 2))) (div (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (* (- 2) ULTIMATE.start_main_~y~0 .cse5) (* (- 1) ULTIMATE.start_main_~z~0)) .cse5))))) (and (< .cse3 (+ 2 .cse4)) (<= .cse4 .cse3) (not (= (+ .cse4 1) .cse3))))) (= (mod (+ .cse6 .cse7 .cse8) .cse9) 0) (not (= .cse9 0)) (< .cse10 2) (< (div (* (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) (- 1)) (- 2)) (+ (* 2 ULTIMATE.start_main_~y~0) 1 .cse10)) (< 0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 10))))) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 (= (mod (div (- ULTIMATE.start_main_~x~0) (- 2)) (- 2)) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse12 .cse13 .cse14) (and .cse15 .cse16 .cse0 .cse2 (not (= (mod .cse17 2) 1)) (= ULTIMATE.start_main_~y~0 .cse1) .cse18 .cse14) (and .cse0 (= .cse6 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse14 (<= ULTIMATE.start_main_~y~0 10) (exists ((aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 Int) (aux_div_v_ULTIMATE.start_main_~y~0_35_37 Int) (aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 Int)) (let ((.cse19 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99))) (.cse20 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_35_37))) (and (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 ULTIMATE.start_main_~y~0) (< aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 2) (not (= .cse19 (+ .cse20 1))) (<= .cse20 .cse19) (<= ULTIMATE.start_main_~b~0 .cse19) (<= 0 aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) (< .cse19 (+ 2 .cse20))))) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse2 .cse13 .cse14 (let ((.cse21 (= .cse23 0))) (or (let ((.cse22 (* (- 2) .cse23 ULTIMATE.start_main_~y~0))) (let ((.cse24 (div (+ .cse6 .cse22 .cse11) .cse23))) (and (not .cse21) (= (mod (+ .cse6 .cse22 .cse7) .cse23) 0) (<= 0 .cse24) (< .cse24 2) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_34_43 Int)) (let ((.cse27 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse28 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse29 (div (+ .cse27 (* (- 2) .cse28 ULTIMATE.start_main_~y~0) (* (- 1) ULTIMATE.start_main_~z~0)) .cse28))) (let ((.cse26 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_34_43)) (.cse25 (+ .cse29 (* 2 ULTIMATE.start_main_~y~0)))) (and (< .cse25 (+ .cse26 1)) (= .cse27 (+ (* 2 (* .cse28 ULTIMATE.start_main_~y~0)) .cse28 (* .cse29 .cse28))) (<= .cse26 .cse25))))))))) (and .cse12 .cse21))) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_29_43 Int) (aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 Int)) (let ((.cse32 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse31 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse32)) (.cse30 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_29_43))) (and (<= .cse30 .cse31) (< aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 2) (< .cse31 (+ .cse30 1)) (<= 0 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse32 1)) (<= 0 aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105)))))) (and (let ((.cse33 (* 2 ULTIMATE.start_main_~a~0))) (or (and .cse15 .cse16 .cse0 (= ULTIMATE.start_main_~x~0 .cse33) (= ULTIMATE.start_main_~y~0 .cse17) .cse14) (and (<= 1 .cse34) .cse0 (= (+ ULTIMATE.start_main_~x~0 .cse33) (* 2 ULTIMATE.start_main_~z~0)) (= ULTIMATE.start_main_~z~0 (* 3 ULTIMATE.start_main_~a~0)) (= ULTIMATE.start_main_~y~0 (div (+ (- 1) .cse35) 2)) .cse14 .cse36))) .cse2) (and .cse0 .cse2 .cse18 (= ULTIMATE.start_main_~y~0 (div .cse35 2)) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) .cse14 .cse36 (not (= .cse34 1)))))) [2021-10-21 19:16:44,750 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2021-10-21 19:16:44,750 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-21 19:16:44,750 INFO L857 garLoopResultBuilder]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2021-10-21 19:16:44,750 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-21 19:16:44,751 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-10-21 19:16:44,751 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-21 19:16:44,751 INFO L857 garLoopResultBuilder]: For program point L10-4(line 10) no Hoare annotation was computed. [2021-10-21 19:16:44,751 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2021-10-21 19:16:44,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:16:44,773 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,774 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,774 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,775 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,775 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,775 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,775 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,776 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,776 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,776 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,776 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,776 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,777 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,777 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,777 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,777 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,778 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,779 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,779 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,779 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,779 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,779 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,780 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,786 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,786 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,786 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,786 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,786 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,787 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,787 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,787 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,787 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,787 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,788 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,788 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,788 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,788 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,788 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,789 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,789 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,789 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,789 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:16:44 BoogieIcfgContainer [2021-10-21 19:16:44,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:16:44,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:16:44,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:16:44,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:16:44,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:11" (3/4) ... [2021-10-21 19:16:44,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:16:44,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-21 19:16:44,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:16:44,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:44,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:44,831 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((8 * a == x && cond == 1) && y == b / 2 / 2 / 2) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 10) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((((z == 0 && !(b % 2 == 1)) && cond == 1) && 1 <= cond) && !(b / 2 % 2 == 1)) && y == b / 2 / 2) && x == 4 * a) && 1 <= b)) || ((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && y <= 10) && (\exists aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 : int, aux_div_v_ULTIMATE.start_main_~y~0_35_37 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 : int :: (((((aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 <= y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 < 2) && !(aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 == 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37 + 1)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && b <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37)) && b == y)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && y == b / 2) && 1 <= b) || ((((((1 <= (-1 + b) / 2 % 2 && cond == 1) && x + 2 * a == 2 * z) && z == 3 * a) && y == (-1 + (-1 + b) / 2) / 2) && 1 <= b) && 1 <= b % 2)) && 1 <= cond)) || (((((((cond == 1 && 1 <= cond) && x == 4 * a) && y == (-1 + b) / 2 / 2) && a == z) && 1 <= b) && 1 <= b % 2) && !((-1 + b) / 2 % 2 == 1)) [2021-10-21 19:16:44,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:16:44,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:16:44,844 INFO L168 Benchmark]: Toolchain (without parser) took 334584.44 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 71.5 MB in the beginning and 96.3 MB in the end (delta: -24.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,844 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 88.2 MB in the end (delta: 62.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:44,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.42 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 86.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,845 INFO L168 Benchmark]: Boogie Preprocessor took 44.80 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 83.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:44,846 INFO L168 Benchmark]: RCFGBuilder took 333.55 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 73.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,846 INFO L168 Benchmark]: TraceAbstraction took 333790.20 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 72.9 MB in the beginning and 99.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 80.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,847 INFO L168 Benchmark]: Witness Printer took 48.42 ms. Allocated memory is still 144.7 MB. Free memory was 99.4 MB in the beginning and 96.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:44,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 88.2 MB in the end (delta: 62.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.42 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 86.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.80 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 83.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 333.55 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 73.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 333790.20 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 72.9 MB in the beginning and 99.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 80.7 MB. Max. memory is 16.1 GB. * Witness Printer took 48.42 ms. Allocated memory is still 144.7 MB. Free memory was 99.4 MB in the beginning and 96.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 333633.1ms, OverallIterations: 15, TraceHistogramMax: 6, EmptinessCheckTime: 26.0ms, AutomataDifference: 56966.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 177322.7ms, InitialAbstractionConstructionTime: 13.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 170 SDtfs, 451 SDslu, 483 SDs, 0 SdLazy, 1351 SolverSat, 148 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 27107.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 37785.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=14, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 116.0ms AutomataMinimizationTime, 15 MinimizatonAttempts, 81 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 25 NumberOfFragments, 827 HoareAnnotationTreeSize, 4 FomulaSimplifications, 23711 FormulaSimplificationTreeSizeReduction, 219.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 3579 FormulaSimplificationTreeSizeReductionInter, 177096.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 82.5ms SsaConstructionTime, 411.8ms SatisfiabilityAnalysisTime, 93122.7ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 301 ConstructedInterpolants, 7 QuantifiedInterpolants, 3764 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1249 ConjunctsInSsa, 367 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 95/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a * b == z + x * y) && a == x) && 1 == cond) && 1 <= b) && y <= 10) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) && b == y) || ((((((0 < y + 1 && cond == 1) && a * b == z + x * y) && 1 == cond) && x % -2 == 0) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) - InvariantResult [Line: 34]: Loop Invariant [2021-10-21 19:16:44,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,868 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,868 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,868 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,868 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,868 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,869 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,869 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,869 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,869 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,869 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,870 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,870 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,870 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,870 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,870 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,871 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-21 19:16:44,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,875 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,875 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,875 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,875 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,875 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99,QUANTIFIED] [2021-10-21 19:16:44,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_35_37,QUANTIFIED] [2021-10-21 19:16:44,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 19:16:44,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 19:16:44,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 19:16:44,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] Derived loop invariant: (((((((((((((((8 * a == x && cond == 1) && y == b / 2 / 2 / 2) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 10) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((((z == 0 && !(b % 2 == 1)) && cond == 1) && 1 <= cond) && !(b / 2 % 2 == 1)) && y == b / 2 / 2) && x == 4 * a) && 1 <= b)) || ((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && y <= 10) && (\exists aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 : int, aux_div_v_ULTIMATE.start_main_~y~0_35_37 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 : int :: (((((aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 <= y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 < 2) && !(aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 == 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37 + 1)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && b <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_35_37_99 < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_35_37)) && b == y)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && y == b / 2) && 1 <= b) || ((((((1 <= (-1 + b) / 2 % 2 && cond == 1) && x + 2 * a == 2 * z) && z == 3 * a) && y == (-1 + (-1 + b) / 2) / 2) && 1 <= b) && 1 <= b % 2)) && 1 <= cond)) || (((((((cond == 1 && 1 <= cond) && x == 4 * a) && y == (-1 + b) / 2 / 2) && a == z) && 1 <= b) && 1 <= b % 2) && !((-1 + b) / 2 % 2 == 1)) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:16:45,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19510c8c-f92b-48d8-a351-e1ef6078e2c2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...