./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt --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 ae3408cd4ee618a2b4029fb36ac233f268b706d6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:32:44,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:32:44,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:32:44,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:32:44,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:32:44,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:32:44,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:32:44,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:32:44,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:32:44,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:32:44,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:32:44,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:32:44,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:32:44,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:32:44,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:32:44,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:32:44,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:32:44,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:32:44,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:32:44,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:32:44,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:32:44,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:32:44,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:32:44,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:32:44,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:32:44,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:32:44,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:32:44,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:32:44,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:32:44,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:32:44,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:32:44,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:32:44,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:32:44,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:32:44,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:32:44,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:32:44,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:32:44,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:32:44,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:32:44,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:32:44,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:32:44,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:32:44,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:32:44,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:32:44,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:32:44,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:32:44,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:32:44,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:32:44,365 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:32:44,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:32:44,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:32:44,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:32:44,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:32:44,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:32:44,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:32:44,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:32:44,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:32:44,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:32:44,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:32:44,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:32:44,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:32:44,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:32:44,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:32:44,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:32:44,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:32:44,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:32:44,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:32:44,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:32:44,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:32:44,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:32:44,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:32:44,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:32:44,374 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_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae3408cd4ee618a2b4029fb36ac233f268b706d6 [2021-10-13 00:32:44,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:32:44,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:32:44,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:32:44,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:32:44,733 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:32:44,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2021-10-13 00:32:44,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/data/39a6e11e3/5507afa4b941459a99d53052bf4dbf0b/FLAG37d056fd3 [2021-10-13 00:32:45,378 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:32:45,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2021-10-13 00:32:45,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/data/39a6e11e3/5507afa4b941459a99d53052bf4dbf0b/FLAG37d056fd3 [2021-10-13 00:32:45,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/data/39a6e11e3/5507afa4b941459a99d53052bf4dbf0b [2021-10-13 00:32:45,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:32:45,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:32:45,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:32:45,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:32:45,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:32:45,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:32:45" (1/1) ... [2021-10-13 00:32:45,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ddce21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:45, skipping insertion in model container [2021-10-13 00:32:45,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:32:45" (1/1) ... [2021-10-13 00:32:45,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:32:45,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:32:45,941 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_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c[588,601] [2021-10-13 00:32:45,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:32:45,984 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:32:45,995 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_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c[588,601] [2021-10-13 00:32:46,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:32:46,023 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:32:46,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46 WrapperNode [2021-10-13 00:32:46,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:32:46,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:32:46,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:32:46,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:32:46,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:32:46,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:32:46,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:32:46,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:32:46,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:32:46,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:32:46,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:32:46,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:32:46,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (1/1) ... [2021-10-13 00:32:46,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:32:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:46,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:32:46,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:32:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:32:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:32:46,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:32:46,563 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-13 00:32:46,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:46 BoogieIcfgContainer [2021-10-13 00:32:46,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:32:46,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:32:46,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:32:46,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:32:46,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:32:45" (1/3) ... [2021-10-13 00:32:46,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541774f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:32:46, skipping insertion in model container [2021-10-13 00:32:46,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:46" (2/3) ... [2021-10-13 00:32:46,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541774f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:32:46, skipping insertion in model container [2021-10-13 00:32:46,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:46" (3/3) ... [2021-10-13 00:32:46,576 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2021-10-13 00:32:46,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:32:46,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-13 00:32:46,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:32:46,646 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:32:46,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-13 00:32:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:32:46,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:46,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:32:46,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 00:32:46,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:46,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578146919] [2021-10-13 00:32:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:46,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:46,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:46,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578146919] [2021-10-13 00:32:46,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578146919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:46,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:46,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:32:46,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281509353] [2021-10-13 00:32:46,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:46,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:47,005 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:47,213 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-10-13 00:32:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:32:47,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:32:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:47,238 INFO L225 Difference]: With dead ends: 101 [2021-10-13 00:32:47,238 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 00:32:47,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 00:32:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-10-13 00:32:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-13 00:32:47,308 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-10-13 00:32:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:47,309 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-13 00:32:47,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-13 00:32:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:32:47,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:47,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:47,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:32:47,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:47,313 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 00:32:47,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:47,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866205402] [2021-10-13 00:32:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:47,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:47,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:47,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337325553] [2021-10-13 00:32:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:47,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:47,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:47,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:32:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:32:47,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:47,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:47,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866205402] [2021-10-13 00:32:47,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:47,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337325553] [2021-10-13 00:32:47,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337325553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:47,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:47,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:32:47,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225312555] [2021-10-13 00:32:47,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:47,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:47,687 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:47,871 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-13 00:32:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:32:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:32:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:47,879 INFO L225 Difference]: With dead ends: 86 [2021-10-13 00:32:47,879 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 00:32:47,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 00:32:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-13 00:32:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-10-13 00:32:47,906 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-10-13 00:32:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:47,906 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-10-13 00:32:47,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-10-13 00:32:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:32:47,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:47,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:47,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:48,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:48,122 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:48,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-10-13 00:32:48,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:48,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090602462] [2021-10-13 00:32:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:48,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:48,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:48,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317346669] [2021-10-13 00:32:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:48,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:48,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:48,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:48,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:32:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:48,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:32:48,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:48,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:48,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090602462] [2021-10-13 00:32:48,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:48,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317346669] [2021-10-13 00:32:48,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317346669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:48,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:48,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:32:48,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014427212] [2021-10-13 00:32:48,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:48,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:48,295 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:48,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:48,326 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-13 00:32:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:32:48,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:32:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:48,329 INFO L225 Difference]: With dead ends: 71 [2021-10-13 00:32:48,330 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 00:32:48,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 00:32:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-13 00:32:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-13 00:32:48,353 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-10-13 00:32:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:48,354 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-13 00:32:48,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-13 00:32:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:32:48,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:48,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:48,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 00:32:48,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:48,574 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 00:32:48,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:48,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476161383] [2021-10-13 00:32:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:48,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:48,608 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:48,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313395003] [2021-10-13 00:32:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:48,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:48,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:48,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:48,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:32:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:48,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:32:48,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:48,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:48,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476161383] [2021-10-13 00:32:48,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:48,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313395003] [2021-10-13 00:32:48,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313395003] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:48,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:48,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:32:48,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470051851] [2021-10-13 00:32:48,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:48,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:48,865 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:48,999 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-13 00:32:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:32:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:32:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:49,004 INFO L225 Difference]: With dead ends: 84 [2021-10-13 00:32:49,006 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 00:32:49,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 00:32:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-13 00:32:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-13 00:32:49,027 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-10-13 00:32:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:49,028 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-13 00:32:49,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-13 00:32:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:32:49,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:49,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:49,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:49,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:49,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:49,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:49,245 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-10-13 00:32:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:49,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296615822] [2021-10-13 00:32:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:49,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:49,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:49,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915023771] [2021-10-13 00:32:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:49,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:49,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:32:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:32:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:49,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:49,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296615822] [2021-10-13 00:32:49,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:49,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915023771] [2021-10-13 00:32:49,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915023771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:49,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:49,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:32:49,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522113875] [2021-10-13 00:32:49,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:49,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:49,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:49,535 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:49,701 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-10-13 00:32:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:32:49,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:32:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:49,705 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:32:49,705 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:32:49,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:32:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-13 00:32:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-10-13 00:32:49,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-10-13 00:32:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:49,718 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-10-13 00:32:49,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-10-13 00:32:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:32:49,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:49,720 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:49,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:49,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:49,941 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-10-13 00:32:49,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:49,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458651977] [2021-10-13 00:32:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:49,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:49,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:49,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263469563] [2021-10-13 00:32:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:49,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:49,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:49,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:49,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:32:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:50,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:32:50,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:50,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458651977] [2021-10-13 00:32:50,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:50,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263469563] [2021-10-13 00:32:50,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263469563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:50,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:50,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:32:50,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446274626] [2021-10-13 00:32:50,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:32:50,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:50,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:32:50,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:50,287 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:50,403 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-13 00:32:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:50,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 00:32:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:50,404 INFO L225 Difference]: With dead ends: 99 [2021-10-13 00:32:50,405 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 00:32:50,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 00:32:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2021-10-13 00:32:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-13 00:32:50,429 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2021-10-13 00:32:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:50,429 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-13 00:32:50,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-13 00:32:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:32:50,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:50,431 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:50,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:50,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:50,658 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-10-13 00:32:50,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:50,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900241414] [2021-10-13 00:32:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:50,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:50,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:50,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831124674] [2021-10-13 00:32:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:50,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:50,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:50,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:50,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:32:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:50,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:32:50,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:50,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:50,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900241414] [2021-10-13 00:32:50,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:50,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831124674] [2021-10-13 00:32:50,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831124674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:50,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:50,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 00:32:50,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711165336] [2021-10-13 00:32:50,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:32:50,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:32:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:50,845 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:50,868 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-13 00:32:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 00:32:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:50,870 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:32:50,870 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:32:50,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:32:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 00:32:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-13 00:32:50,881 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2021-10-13 00:32:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:50,884 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-13 00:32:50,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-13 00:32:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:32:50,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:50,885 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:50,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:51,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:51,106 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:51,106 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-10-13 00:32:51,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:51,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977071560] [2021-10-13 00:32:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:51,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:51,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:51,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185150940] [2021-10-13 00:32:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:51,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:51,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:51,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:32:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:32:51,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:51,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:51,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977071560] [2021-10-13 00:32:51,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:51,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185150940] [2021-10-13 00:32:51,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185150940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:51,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:51,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:32:51,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570930493] [2021-10-13 00:32:51,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:32:51,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:32:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:51,479 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:51,585 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-13 00:32:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 00:32:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:51,587 INFO L225 Difference]: With dead ends: 96 [2021-10-13 00:32:51,587 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 00:32:51,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 00:32:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-10-13 00:32:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-10-13 00:32:51,595 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2021-10-13 00:32:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:51,595 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-10-13 00:32:51,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-10-13 00:32:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:32:51,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:51,597 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:51,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:51,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 00:32:51,818 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-10-13 00:32:51,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:51,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496518133] [2021-10-13 00:32:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:51,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:51,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:51,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102120554] [2021-10-13 00:32:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:51,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:51,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:51,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:51,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:32:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:32:51,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:52,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:52,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496518133] [2021-10-13 00:32:52,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:52,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102120554] [2021-10-13 00:32:52,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102120554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:52,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:52,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:32:52,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168341650] [2021-10-13 00:32:52,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:32:52,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:32:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:52,216 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:52,331 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-10-13 00:32:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:32:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 00:32:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:52,333 INFO L225 Difference]: With dead ends: 97 [2021-10-13 00:32:52,333 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 00:32:52,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 00:32:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-10-13 00:32:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-13 00:32:52,341 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2021-10-13 00:32:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-13 00:32:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-13 00:32:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:32:52,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:52,343 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:52,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:52,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:52,570 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:52,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-10-13 00:32:52,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:52,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872957928] [2021-10-13 00:32:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:52,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:52,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:52,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632846007] [2021-10-13 00:32:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:52,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:52,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:52,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:52,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:32:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:52,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:32:52,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:53,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:53,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872957928] [2021-10-13 00:32:53,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:53,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632846007] [2021-10-13 00:32:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632846007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:53,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:32:53,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895157893] [2021-10-13 00:32:53,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:53,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:53,780 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:54,059 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-10-13 00:32:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:32:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 00:32:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:54,061 INFO L225 Difference]: With dead ends: 78 [2021-10-13 00:32:54,061 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 00:32:54,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:32:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 00:32:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-13 00:32:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-13 00:32:54,068 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2021-10-13 00:32:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-13 00:32:54,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-13 00:32:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:32:54,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:54,078 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-13 00:32:54,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:54,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:32:54,298 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-10-13 00:32:54,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:54,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260799716] [2021-10-13 00:32:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:54,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:54,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:54,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989149887] [2021-10-13 00:32:54,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:32:54,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:54,314 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:54,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:32:54,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:32:54,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:32:54,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:32:54,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:54,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:54,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260799716] [2021-10-13 00:32:54,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:54,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989149887] [2021-10-13 00:32:54,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989149887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:54,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:54,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:32:54,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309536243] [2021-10-13 00:32:54,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:54,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:54,609 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:54,631 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2021-10-13 00:32:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 00:32:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:54,632 INFO L225 Difference]: With dead ends: 98 [2021-10-13 00:32:54,632 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 00:32:54,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 00:32:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-13 00:32:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-13 00:32:54,641 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 32 [2021-10-13 00:32:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:54,642 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-13 00:32:54,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-13 00:32:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:32:54,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:54,645 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:54,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:32:54,861 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-10-13 00:32:54,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:54,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904016853] [2021-10-13 00:32:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:54,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:54,869 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:54,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95387994] [2021-10-13 00:32:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:54,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:54,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:54,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:32:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:55,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:32:55,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:32:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:55,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:55,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904016853] [2021-10-13 00:32:55,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:32:55,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95387994] [2021-10-13 00:32:55,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95387994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:32:55,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:32:55,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:32:55,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978458022] [2021-10-13 00:32:55,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:55,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:55,600 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:55,767 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2021-10-13 00:32:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:32:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-13 00:32:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:55,769 INFO L225 Difference]: With dead ends: 58 [2021-10-13 00:32:55,769 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:32:55,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:32:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:32:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-13 00:32:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 49 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-10-13 00:32:55,775 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 33 [2021-10-13 00:32:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:55,776 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-10-13 00:32:55,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:32:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-10-13 00:32:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:32:55,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:55,777 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:55,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:55,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:32:55,998 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:32:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:55,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-10-13 00:32:55,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:55,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452886261] [2021-10-13 00:32:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:55,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:56,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:32:56,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482961440] [2021-10-13 00:32:56,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:32:56,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:32:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:56,024 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:32:56,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:32:56,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:32:56,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 00:32:56,283 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:32:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:32:56,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:32:56,335 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:32:56,336 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:32:56,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:32:56,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:32:56,564 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:32:56,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:32:56 BoogieIcfgContainer [2021-10-13 00:32:56,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:32:56,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:32:56,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:32:56,606 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:32:56,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:46" (3/4) ... [2021-10-13 00:32:56,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:32:56,655 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:32:56,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:32:56,657 INFO L168 Benchmark]: Toolchain (without parser) took 10941.01 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 70.4 MB in the beginning and 38.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,657 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:32:56,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.66 ms. Allocated memory is still 107.0 MB. Free memory was 70.2 MB in the beginning and 82.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 107.0 MB. Free memory was 82.4 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:32:56,658 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,659 INFO L168 Benchmark]: RCFGBuilder took 460.98 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 68.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,659 INFO L168 Benchmark]: TraceAbstraction took 10037.46 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 67.3 MB in the beginning and 41.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 60.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,660 INFO L168 Benchmark]: Witness Printer took 50.06 ms. Allocated memory is still 140.5 MB. Free memory was 41.5 MB in the beginning and 38.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:32:56,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.66 ms. Allocated memory is still 107.0 MB. Free memory was 70.2 MB in the beginning and 82.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 107.0 MB. Free memory was 82.4 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 460.98 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 68.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10037.46 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 67.3 MB in the beginning and 41.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 60.1 MB. Max. memory is 16.1 GB. * Witness Printer took 50.06 ms. Allocated memory is still 140.5 MB. Free memory was 41.5 MB in the beginning and 38.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 9926.0ms, OverallIterations: 13, TraceHistogramMax: 3, EmptinessCheckTime: 46.7ms, AutomataDifference: 1661.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 424 SDtfs, 326 SDslu, 768 SDs, 0 SdLazy, 731 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 871.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 418.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 186.8ms AutomataMinimizationTime, 12 MinimizatonAttempts, 137 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 98.5ms SsaConstructionTime, 318.8ms SatisfiabilityAnalysisTime, 3138.1ms InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 2067 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1059 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 20/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:32:56,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d26cd4e-a0ed-4fd5-9ec4-6f085ac5b044/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...