./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y --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 8bd25fcd8e8d81d9ce03f11651b22e7d6f0ec0da3b511f7ebe00128a9109f319
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:50:31,078 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:50:31,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:50:31,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:50:31,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:50:31,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:50:31,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:50:31,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:50:31,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:50:31,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:50:31,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:50:31,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:50:31,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:50:31,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:50:31,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:50:31,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:50:31,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:50:31,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:50:31,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:50:31,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:50:31,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:50:31,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:50:31,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:50:31,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:50:31,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:50:31,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:50:31,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:50:31,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:50:31,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:50:31,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:50:31,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:50:31,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:50:31,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:50:31,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:50:31,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:50:31,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:50:31,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:50:31,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:50:31,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:50:31,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:50:31,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:50:31,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:50:31,310 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:50:31,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:50:31,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:50:31,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:50:31,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:50:31,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:50:31,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:50:31,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:50:31,315 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:50:31,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:50:31,317 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:50:31,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:50:31,317 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:50:31,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:50:31,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:50:31,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:50:31,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:50:31,319 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:50:31,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:50:31,319 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:50:31,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:50:31,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:50:31,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:50:31,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:50:31,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:50:31,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:50:31,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:50:31,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:50:31,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:50:31,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:50:31,324 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:50:31,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:50:31,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:50:31,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:50:31,326 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_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd25fcd8e8d81d9ce03f11651b22e7d6f0ec0da3b511f7ebe00128a9109f319
[2021-11-13 18:50:31,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:50:31,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:50:31,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:50:31,754 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:50:31,755 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:50:31,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c
[2021-11-13 18:50:31,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/data/b8c1b635c/695f7a7fb2174ba182e117052ad09c84/FLAG7636260bd
[2021-11-13 18:50:32,428 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:50:32,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c
[2021-11-13 18:50:32,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/data/b8c1b635c/695f7a7fb2174ba182e117052ad09c84/FLAG7636260bd
[2021-11-13 18:50:32,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/data/b8c1b635c/695f7a7fb2174ba182e117052ad09c84
[2021-11-13 18:50:32,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:50:32,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:50:32,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:50:32,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:50:32,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:50:32,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:32" (1/1) ...
[2021-11-13 18:50:32,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c217bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:32, skipping insertion in model container
[2021-11-13 18:50:32,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:32" (1/1) ...
[2021-11-13 18:50:32,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:50:32,811 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:50:33,040 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_391a74fd-ac25-4d8d-a3be-23c166f1325e/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c[537,550]
[2021-11-13 18:50:33,063 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:50:33,074 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:50:33,088 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_391a74fd-ac25-4d8d-a3be-23c166f1325e/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c[537,550]
[2021-11-13 18:50:33,096 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:50:33,113 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:50:33,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33 WrapperNode
[2021-11-13 18:50:33,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:50:33,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:50:33,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:50:33,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:50:33,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:50:33,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:50:33,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:50:33,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:50:33,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:50:33,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:50:33,187 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:50:33,187 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:50:33,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (1/1) ...
[2021-11-13 18:50:33,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:50:33,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:50:33,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:50:33,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:50:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 18:50:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 18:50:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:50:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:50:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:50:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:50:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 18:50:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 18:50:33,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:50:33,544 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:50:33,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:33 BoogieIcfgContainer
[2021-11-13 18:50:33,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:50:33,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:50:33,549 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:50:33,554 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:50:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:50:32" (1/3) ...
[2021-11-13 18:50:33,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c4635e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:33, skipping insertion in model container
[2021-11-13 18:50:33,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:33" (2/3) ...
[2021-11-13 18:50:33,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c4635e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:33, skipping insertion in model container
[2021-11-13 18:50:33,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:33" (3/3) ...
[2021-11-13 18:50:33,561 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound100.c
[2021-11-13 18:50:33,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:50:33,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:50:33,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:50:33,646 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
[2021-11-13 18:50:33,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:50:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:50:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:50:33,679 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:50:33,680 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:50:33,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:50:33,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:50:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times
[2021-11-13 18:50:33,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:50:33,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690006406]
[2021-11-13 18:50:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:33,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:50:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 18:50:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 18:50:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-11-13 18:50:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:50:34,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:50:34,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690006406]
[2021-11-13 18:50:34,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690006406] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:50:34,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:50:34,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:50:34,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879980772]
[2021-11-13 18:50:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:50:34,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:50:34,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:50:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:50:34,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:50:34,251 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:50:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:50:34,293 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions.
[2021-11-13 18:50:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:50:34,296 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24
[2021-11-13 18:50:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:50:34,308 INFO L225 Difference]: With dead ends: 51
[2021-11-13 18:50:34,309 INFO L226 Difference]: Without dead ends: 23
[2021-11-13 18:50:34,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:50:34,324 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:50:34,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:50:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-13 18:50:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-13 18:50:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 18:50:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-11-13 18:50:34,391 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24
[2021-11-13 18:50:34,391 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:50:34,392 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-11-13 18:50:34,393 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:50:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-11-13 18:50:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:50:34,404 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:50:34,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:50:34,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:50:34,405 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:50:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:50:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times
[2021-11-13 18:50:34,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:50:34,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334621489]
[2021-11-13 18:50:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:34,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:50:34,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:50:34,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739158463]
[2021-11-13 18:50:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:34,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:50:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:50:34,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:50:34,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:50:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-13 18:50:34,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:50:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:50:34,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:50:34,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:50:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334621489]
[2021-11-13 18:50:34,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:50:34,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739158463]
[2021-11-13 18:50:34,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739158463] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:50:34,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:50:34,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:50:34,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415615312]
[2021-11-13 18:50:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:50:34,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:50:34,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:50:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:50:34,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:50:34,878 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:50:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:50:35,009 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2021-11-13 18:50:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:50:35,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2021-11-13 18:50:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:50:35,021 INFO L225 Difference]: With dead ends: 35
[2021-11-13 18:50:35,021 INFO L226 Difference]: Without dead ends: 33
[2021-11-13 18:50:35,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:50:35,024 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.16ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:50:35,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 36 Unknown, 0 Unchecked, 12.25ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 75.16ms Time]
[2021-11-13 18:50:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-11-13 18:50:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29.
[2021-11-13 18:50:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:50:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2021-11-13 18:50:35,037 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24
[2021-11-13 18:50:35,039 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:50:35,039 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2021-11-13 18:50:35,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:50:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2021-11-13 18:50:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-11-13 18:50:35,041 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:50:35,042 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:50:35,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:50:35,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:50:35,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:50:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:50:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times
[2021-11-13 18:50:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:50:35,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802346883]
[2021-11-13 18:50:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:35,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:50:35,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:50:35,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071845684]
[2021-11-13 18:50:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:35,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:50:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:50:35,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:50:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:50:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:35,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:50:35,385 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:50:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:50:35,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:50:35,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:50:35,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802346883]
[2021-11-13 18:50:35,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:50:35,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071845684]
[2021-11-13 18:50:35,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071845684] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:50:35,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:50:35,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:50:35,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590052469]
[2021-11-13 18:50:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:50:35,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:50:35,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:50:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:50:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:50:35,619 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:50:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:50:35,756 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions.
[2021-11-13 18:50:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:50:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30
[2021-11-13 18:50:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:50:35,760 INFO L225 Difference]: With dead ends: 39
[2021-11-13 18:50:35,760 INFO L226 Difference]: Without dead ends: 32
[2021-11-13 18:50:35,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:50:35,763 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.39ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:50:35,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 50 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 92.39ms Time]
[2021-11-13 18:50:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-11-13 18:50:35,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2021-11-13 18:50:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:50:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2021-11-13 18:50:35,786 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30
[2021-11-13 18:50:35,786 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:50:35,786 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2021-11-13 18:50:35,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:50:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2021-11-13 18:50:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:50:35,789 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:50:35,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:50:35,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:50:35,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:50:35,990 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:50:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:50:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times
[2021-11-13 18:50:35,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:50:35,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154554410]
[2021-11-13 18:50:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:35,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:50:36,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:50:36,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151541272]
[2021-11-13 18:50:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:50:36,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:50:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:50:36,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:50:36,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:50:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:50:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-11-13 18:50:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:50:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:50:42,742 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:50:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:50:49,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:50:49,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154554410]
[2021-11-13 18:50:49,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:50:49,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151541272]
[2021-11-13 18:50:49,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151541272] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:50:49,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:50:49,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14
[2021-11-13 18:50:49,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171698874]
[2021-11-13 18:50:49,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:50:49,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 18:50:49,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:50:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 18:50:49,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:50:49,003 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:50:50,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:52,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:54,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:56,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:58,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:59,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:50:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:50:59,899 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions.
[2021-11-13 18:50:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 18:50:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2021-11-13 18:50:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:50:59,903 INFO L225 Difference]: With dead ends: 48
[2021-11-13 18:50:59,903 INFO L226 Difference]: Without dead ends: 46
[2021-11-13 18:50:59,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2021-11-13 18:50:59,905 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10199.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10233.83ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:50:59,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 157 Invalid, 182 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [14 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 10233.83ms Time]
[2021-11-13 18:50:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-11-13 18:50:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43.
[2021-11-13 18:50:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-13 18:50:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions.
[2021-11-13 18:50:59,918 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33
[2021-11-13 18:50:59,919 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:50:59,919 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions.
[2021-11-13 18:50:59,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:50:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions.
[2021-11-13 18:50:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:50:59,922 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:50:59,922 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:50:59,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:51:00,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:00,137 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:51:00,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:51:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times
[2021-11-13 18:51:00,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:51:00,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538110342]
[2021-11-13 18:51:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:00,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:51:00,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:51:00,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547709802]
[2021-11-13 18:51:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:00,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:51:00,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:51:00,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:51:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:51:00,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 18:51:00,274 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:51:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:51:01,753 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:51:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:51:02,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:51:02,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538110342]
[2021-11-13 18:51:02,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:51:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547709802]
[2021-11-13 18:51:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547709802] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:51:02,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:51:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15
[2021-11-13 18:51:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038558775]
[2021-11-13 18:51:02,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:51:02,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:51:02,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:51:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:51:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:51:02,626 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:51:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:51:03,900 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions.
[2021-11-13 18:51:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-11-13 18:51:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33
[2021-11-13 18:51:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:51:03,903 INFO L225 Difference]: With dead ends: 79
[2021-11-13 18:51:03,904 INFO L226 Difference]: Without dead ends: 72
[2021-11-13 18:51:03,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420
[2021-11-13 18:51:03,905 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 645.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 694.72ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:51:03,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 116 Invalid, 224 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [34 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 694.72ms Time]
[2021-11-13 18:51:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2021-11-13 18:51:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69.
[2021-11-13 18:51:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.22) internal successors, (61), 53 states have internal predecessors, (61), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11)
[2021-11-13 18:51:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions.
[2021-11-13 18:51:03,920 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 33
[2021-11-13 18:51:03,921 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:51:03,921 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions.
[2021-11-13 18:51:03,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:51:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions.
[2021-11-13 18:51:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-11-13 18:51:03,923 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:51:03,923 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:51:03,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:51:04,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:04,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:51:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:51:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times
[2021-11-13 18:51:04,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:51:04,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032302952]
[2021-11-13 18:51:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:04,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:51:04,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:51:04,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003937633]
[2021-11-13 18:51:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:04,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:04,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:51:04,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:51:04,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:51:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:51:04,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:51:04,256 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:51:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:51:04,455 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:51:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:51:04,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:51:04,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032302952]
[2021-11-13 18:51:04,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:51:04,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003937633]
[2021-11-13 18:51:04,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003937633] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:51:04,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:51:04,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-11-13 18:51:04,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976868407]
[2021-11-13 18:51:04,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:51:04,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:51:04,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:51:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:51:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:51:04,680 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:51:06,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:51:08,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:51:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:51:08,467 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions.
[2021-11-13 18:51:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 18:51:08,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39
[2021-11-13 18:51:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:51:08,471 INFO L225 Difference]: With dead ends: 76
[2021-11-13 18:51:08,471 INFO L226 Difference]: Without dead ends: 69
[2021-11-13 18:51:08,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:51:08,472 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3723.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3735.87ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:51:08,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 106 Invalid, 60 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 3735.87ms Time]
[2021-11-13 18:51:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2021-11-13 18:51:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68.
[2021-11-13 18:51:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11)
[2021-11-13 18:51:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions.
[2021-11-13 18:51:08,500 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 39
[2021-11-13 18:51:08,500 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:51:08,501 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions.
[2021-11-13 18:51:08,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:51:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions.
[2021-11-13 18:51:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-11-13 18:51:08,503 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:51:08,503 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:51:08,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:51:08,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:08,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:51:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:51:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times
[2021-11-13 18:51:08,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:51:08,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845874855]
[2021-11-13 18:51:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:08,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:51:08,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:51:08,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887306466]
[2021-11-13 18:51:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:51:08,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:51:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:51:08,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:51:08,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:51:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:51:08,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-11-13 18:51:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:53:51,972 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-11-13 19:00:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-11-13 19:00:09,337 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 19:00:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 19:00:28,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 19:00:28,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845874855]
[2021-11-13 19:00:28,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 19:00:28,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887306466]
[2021-11-13 19:00:28,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887306466] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 19:00:28,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 19:00:28,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 23
[2021-11-13 19:00:28,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434657398]
[2021-11-13 19:00:28,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 19:00:28,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-11-13 19:00:28,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 19:00:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-11-13 19:00:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=409, Unknown=12, NotChecked=0, Total=506
[2021-11-13 19:00:28,715 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8)
[2021-11-13 19:00:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 19:00:43,197 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions.
[2021-11-13 19:00:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-11-13 19:00:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 51
[2021-11-13 19:00:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 19:00:43,200 INFO L225 Difference]: With dead ends: 90
[2021-11-13 19:00:43,200 INFO L226 Difference]: Without dead ends: 88
[2021-11-13 19:00:43,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 66.7s TimeCoverageRelationStatistics Valid=169, Invalid=873, Unknown=14, NotChecked=0, Total=1056
[2021-11-13 19:00:43,202 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2575.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 2627.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 19:00:43,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 236 Invalid, 329 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [29 Valid, 240 Invalid, 0 Unknown, 60 Unchecked, 2627.14ms Time]
[2021-11-13 19:00:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2021-11-13 19:00:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87.
[2021-11-13 19:00:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 67 states have internal predecessors, (75), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14)
[2021-11-13 19:00:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions.
[2021-11-13 19:00:43,221 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 51
[2021-11-13 19:00:43,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 19:00:43,222 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions.
[2021-11-13 19:00:43,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8)
[2021-11-13 19:00:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions.
[2021-11-13 19:00:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 19:00:43,225 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 19:00:43,225 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 19:00:43,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 19:00:43,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:00:43,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 19:00:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 19:00:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1307593476, now seen corresponding path program 2 times
[2021-11-13 19:00:43,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 19:00:43,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342229957]
[2021-11-13 19:00:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 19:00:43,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 19:00:43,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 19:00:43,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89055489]
[2021-11-13 19:00:43,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 19:00:43,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:00:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 19:00:43,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 19:00:43,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 19:00:43,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 19:00:43,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 19:00:43,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 38 conjunts are in the unsatisfiable core
[2021-11-13 19:00:43,525 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 19:01:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-11-13 19:01:43,677 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 19:01:51,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 19:01:51,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342229957]
[2021-11-13 19:01:51,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 19:01:51,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89055489]
[2021-11-13 19:01:51,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89055489] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 19:01:51,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 19:01:51,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2021-11-13 19:01:51,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243005354]
[2021-11-13 19:01:51,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 19:01:51,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-11-13 19:01:51,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 19:01:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-11-13 19:01:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650
[2021-11-13 19:01:51,874 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 19:01:54,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:01:57,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:01:58,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:02:01,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:02:03,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:02:05,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 19:02:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 19:02:05,288 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions.
[2021-11-13 19:02:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-13 19:02:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60
[2021-11-13 19:02:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 19:02:05,290 INFO L225 Difference]: With dead ends: 125
[2021-11-13 19:02:05,290 INFO L226 Difference]: Without dead ends: 123
[2021-11-13 19:02:05,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756
[2021-11-13 19:02:05,292 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13088.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 13137.01ms IncrementalHoareTripleChecker+Time
[2021-11-13 19:02:05,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 308 Invalid, 276 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 4 Unknown, 55 Unchecked, 13137.01ms Time]
[2021-11-13 19:02:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2021-11-13 19:02:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109.
[2021-11-13 19:02:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 82 states have (on average 1.146341463414634) internal successors, (94), 84 states have internal predecessors, (94), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-13 19:02:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions.
[2021-11-13 19:02:05,313 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 60
[2021-11-13 19:02:05,313 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 19:02:05,314 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions.
[2021-11-13 19:02:05,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 19:02:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions.
[2021-11-13 19:02:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 19:02:05,322 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 19:02:05,322 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 19:02:05,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2021-11-13 19:02:05,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2021-11-13 19:02:05,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 19:02:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 19:02:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash 602841912, now seen corresponding path program 3 times
[2021-11-13 19:02:05,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 19:02:05,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102069987]
[2021-11-13 19:02:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 19:02:05,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 19:02:05,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 19:02:05,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106826030]
[2021-11-13 19:02:05,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 19:02:05,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:02:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 19:02:05,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 19:02:05,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 19:02:05,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-13 19:02:05,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 19:02:05,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-11-13 19:02:05,637 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 19:02:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2021-11-13 19:02:07,391 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 19:02:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2021-11-13 19:02:08,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 19:02:08,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102069987]
[2021-11-13 19:02:08,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 19:02:08,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106826030]
[2021-11-13 19:02:08,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106826030] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 19:02:08,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 19:02:08,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19
[2021-11-13 19:02:08,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551303009]
[2021-11-13 19:02:08,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 19:02:08,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-11-13 19:02:08,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 19:02:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-11-13 19:02:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2021-11-13 19:02:08,682 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2021-11-13 19:02:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 19:02:10,112 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions.
[2021-11-13 19:02:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 19:02:10,114 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60
[2021-11-13 19:02:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 19:02:10,116 INFO L225 Difference]: With dead ends: 122
[2021-11-13 19:02:10,116 INFO L226 Difference]: Without dead ends: 49
[2021-11-13 19:02:10,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650
[2021-11-13 19:02:10,120 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 512.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 531.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 19:02:10,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 164 Invalid, 163 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 4 Unchecked, 531.14ms Time]
[2021-11-13 19:02:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-13 19:02:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47.
[2021-11-13 19:02:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-13 19:02:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2021-11-13 19:02:10,129 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 60
[2021-11-13 19:02:10,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 19:02:10,130 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2021-11-13 19:02:10,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2021-11-13 19:02:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2021-11-13 19:02:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 19:02:10,132 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 19:02:10,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 19:02:10,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2021-11-13 19:02:10,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:02:10,348 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 19:02:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 19:02:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times
[2021-11-13 19:02:10,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 19:02:10,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632874796]
[2021-11-13 19:02:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 19:02:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 19:02:10,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 19:02:10,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804317337]
[2021-11-13 19:02:10,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 19:02:10,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:02:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 19:02:10,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 19:02:10,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-13 19:02:10,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 19:02:10,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 19:02:10,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 45 conjunts are in the unsatisfiable core
[2021-11-13 19:02:10,422 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 19:02:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-11-13 19:02:14,207 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 19:02:20,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 19:02:20,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632874796]
[2021-11-13 19:02:20,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 19:02:20,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804317337]
[2021-11-13 19:02:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804317337] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 19:02:20,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 19:02:20,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2021-11-13 19:02:20,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5539991]
[2021-11-13 19:02:20,468 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 19:02:20,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-11-13 19:02:20,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 19:02:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-11-13 19:02:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650
[2021-11-13 19:02:20,470 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2021-11-13 19:02:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 19:02:21,230 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions.
[2021-11-13 19:02:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-13 19:02:21,230 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 60
[2021-11-13 19:02:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 19:02:21,231 INFO L225 Difference]: With dead ends: 61
[2021-11-13 19:02:21,232 INFO L226 Difference]: Without dead ends: 59
[2021-11-13 19:02:21,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812
[2021-11-13 19:02:21,233 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 595.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 652.88ms IncrementalHoareTripleChecker+Time
[2021-11-13 19:02:21,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 239 Invalid, 448 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [16 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 652.88ms Time]
[2021-11-13 19:02:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2021-11-13 19:02:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56.
[2021-11-13 19:02:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.024390243902439) internal successors, (42), 42 states have internal predecessors, (42), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-13 19:02:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions.
[2021-11-13 19:02:21,247 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 60
[2021-11-13 19:02:21,248 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 19:02:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions.
[2021-11-13 19:02:21,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2021-11-13 19:02:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions.
[2021-11-13 19:02:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2021-11-13 19:02:21,250 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 19:02:21,250 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 19:02:21,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-13 19:02:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 19:02:21,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 19:02:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 19:02:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2008487185, now seen corresponding path program 3 times
[2021-11-13 19:02:21,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 19:02:21,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093533598]
[2021-11-13 19:02:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 19:02:21,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 19:02:21,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 19:02:21,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083008291]
[2021-11-13 19:02:21,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 19:02:21,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 19:02:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 19:02:21,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 19:02:21,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-11-13 19:02:21,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-11-13 19:02:21,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 19:02:21,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-11-13 19:02:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 19:02:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 19:02:25,586 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 19:02:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 19:02:27,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 19:02:27,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093533598]
[2021-11-13 19:02:27,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 19:02:27,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083008291]
[2021-11-13 19:02:27,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083008291] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 19:02:27,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 19:02:27,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 35
[2021-11-13 19:02:27,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283923464]
[2021-11-13 19:02:27,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 19:02:27,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2021-11-13 19:02:27,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 19:02:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-11-13 19:02:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190
[2021-11-13 19:02:27,699 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 19:02:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 19:02:33,773 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions.
[2021-11-13 19:02:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-11-13 19:02:33,774 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 69
[2021-11-13 19:02:33,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 19:02:33,775 INFO L225 Difference]: With dead ends: 64
[2021-11-13 19:02:33,775 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 19:02:33,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=624, Invalid=2238, Unknown=0, NotChecked=0, Total=2862
[2021-11-13 19:02:33,778 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 741.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 792.08ms IncrementalHoareTripleChecker+Time
[2021-11-13 19:02:33,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 190 Invalid, 370 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [55 Valid, 275 Invalid, 0 Unknown, 40 Unchecked, 792.08ms Time]
[2021-11-13 19:02:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 19:02:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 19:02:33,779 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)
[2021-11-13 19:02:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 19:02:33,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69
[2021-11-13 19:02:33,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 19:02:33,780 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 19:02:33,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 19:02:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 19:02:33,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 19:02:33,783 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 19:02:33,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-11-13 19:02:33,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2021-11-13 19:02:33,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 19:02:38,458 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 19:02:38,459 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true
[2021-11-13 19:02:38,459 INFO L854 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 100))
[2021-11-13 19:02:38,459 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true
[2021-11-13 19:02:38,459 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed.
[2021-11-13 19:02:38,459 INFO L861 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true
[2021-11-13 19:02:38,459 INFO L858 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed.
[2021-11-13 19:02:38,459 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 100) .cse0 .cse1) (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (< 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))))
[2021-11-13 19:02:38,459 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0)))
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 100) .cse0 .cse1) (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (< 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))))
[2021-11-13 19:02:38,460 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed.
[2021-11-13 19:02:38,460 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed.
[2021-11-13 19:02:38,461 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2021-11-13 19:02:38,471 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1]
[2021-11-13 19:02:38,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 19:02:38,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 07:02:38 BoogieIcfgContainer
[2021-11-13 19:02:38,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 19:02:38,502 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 19:02:38,502 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 19:02:38,502 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 19:02:38,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:33" (3/4) ...
[2021-11-13 19:02:38,506 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 19:02:38,517 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not
[2021-11-13 19:02:38,517 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2021-11-13 19:02:38,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2021-11-13 19:02:38,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 19:02:38,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 19:02:38,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 19:02:38,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 19:02:38,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 19:02:38,567 INFO L158 Benchmark]: Toolchain (without parser) took 725801.64ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 50.5MB in the beginning and 61.8MB in the end (delta: -11.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,567 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 66.6MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 19:02:38,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.84ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 86.5MB in the end (delta: -36.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.74ms. Allocated memory is still 109.1MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,570 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 109.1MB. Free memory was 84.6MB in the beginning and 83.8MB in the end (delta: 785.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,570 INFO L158 Benchmark]: RCFGBuilder took 360.05ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 74.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,571 INFO L158 Benchmark]: TraceAbstraction took 724952.43ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.3MB in the beginning and 64.9MB in the end (delta: 8.4MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,571 INFO L158 Benchmark]: Witness Printer took 64.27ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 19:02:38,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.43ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 66.6MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 346.84ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 86.5MB in the end (delta: -36.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 42.74ms. Allocated memory is still 109.1MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 27.56ms. Allocated memory is still 109.1MB. Free memory was 84.6MB in the beginning and 83.8MB in the end (delta: 785.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 360.05ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 74.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 724952.43ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.3MB in the beginning and 64.9MB in the end (delta: 8.4MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB.
* Witness Printer took 64.27ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 724.8s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 52.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 299 SdHoareTripleChecker+Valid, 32572.24ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 1704 SdHoareTripleChecker+Invalid, 32205.13ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 159 IncrementalHoareTripleChecker+Unchecked, 1469 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1795 IncrementalHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 235 mSDtfsCounter, 1795 mSolverCounterSat, 43.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 839 GetRequests, 601 SyntacticMatches, 23 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 114.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 33 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 33 PreInvPairs, 65 NumberOfFragments, 116 HoareAnnotationTreeSize, 33 FomulaSimplifications, 147 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 4785 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 663.8s InterpolantComputationTime, 483 NumberOfCodeBlocks, 474 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 751 ConstructedInterpolants, 15 QuantifiedInterpolants, 9255 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 577/822 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
1 specifications checked. All of them hold
- InvariantResult [Line: 34]: Loop Invariant
Derived loop invariant: (((0 <= y && b <= 100) && 1 <= b) && y * x + z == a * b) || (((1 <= b && x % 2 == 0) && y * x + z == a * b) && 0 < y + 1)
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-11-13 19:02:38,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391a74fd-ac25-4d8d-a3be-23c166f1325e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE