./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD --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 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:05:08,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:08,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:08,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:08,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:08,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:08,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:08,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:08,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:08,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:08,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:08,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:08,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:08,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:08,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:08,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:08,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:08,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:08,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:08,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:08,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:08,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:08,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:08,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:08,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:08,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:08,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:08,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:08,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:08,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:08,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:08,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:08,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:08,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:08,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:08,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:08,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:08,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:08,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:08,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:08,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:08,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-29 00:05:08,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:08,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:08,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:08,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:08,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:08,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:08,571 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:08,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:08,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:05:08,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:05:08,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:05:08,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:08,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:05:08,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:05:08,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:05:08,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:05:08,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:05:08,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:08,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:05:08,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:08,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:08,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:05:08,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:08,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:08,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:05:08,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:05:08,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:05:08,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:05:08,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:05:08,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:05:08,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:05:08,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:08,583 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_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d [2021-10-29 00:05:08,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:09,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:09,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:09,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:09,027 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:09,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-10-29 00:05:09,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/data/1d74c9a01/1522a42200f743bfae3ff08f05c56ec6/FLAGced856927 [2021-10-29 00:05:09,679 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:09,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-10-29 00:05:09,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/data/1d74c9a01/1522a42200f743bfae3ff08f05c56ec6/FLAGced856927 [2021-10-29 00:05:10,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/data/1d74c9a01/1522a42200f743bfae3ff08f05c56ec6 [2021-10-29 00:05:10,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:10,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:05:10,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:10,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:10,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:10,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53299f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10, skipping insertion in model container [2021-10-29 00:05:10,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:10,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:10,353 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_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-10-29 00:05:10,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:10,384 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:05:10,397 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_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-10-29 00:05:10,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:10,423 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:05:10,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10 WrapperNode [2021-10-29 00:05:10,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:10,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:10,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:05:10,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:05:10,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:10,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:05:10,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:05:10,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:05:10,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:05:10,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:05:10,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:05:10,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:05:10,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (1/1) ... [2021-10-29 00:05:10,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:05:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 00:05:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:05:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:05:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:05:11,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:05:11,106 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-29 00:05:11,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:11 BoogieIcfgContainer [2021-10-29 00:05:11,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:05:11,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:05:11,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:05:11,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:05:11,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:05:10" (1/3) ... [2021-10-29 00:05:11,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f80853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:11, skipping insertion in model container [2021-10-29 00:05:11,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:10" (2/3) ... [2021-10-29 00:05:11,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f80853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:11, skipping insertion in model container [2021-10-29 00:05:11,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:11" (3/3) ... [2021-10-29 00:05:11,136 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2021-10-29 00:05:11,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:05:11,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 00:05:11,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:05:11,222 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 00:05:11,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 00:05:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 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) [2021-10-29 00:05:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 00:05:11,268 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:11,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:11,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-29 00:05:11,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:11,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683857975] [2021-10-29 00:05:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:11,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:11,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683857975] [2021-10-29 00:05:11,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683857975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:11,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:11,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:05:11,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702703502] [2021-10-29 00:05:11,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:05:11,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:05:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:11,556 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:11,584 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-10-29 00:05:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:05:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 00:05:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:11,598 INFO L225 Difference]: With dead ends: 83 [2021-10-29 00:05:11,598 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 00:05:11,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 00:05:11,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 00:05:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 38 states have internal predecessors, (40), 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) [2021-10-29 00:05:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-29 00:05:11,666 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-10-29 00:05:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:11,669 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-29 00:05:11,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-29 00:05:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 00:05:11,671 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:11,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:11,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 00:05:11,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-29 00:05:11,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:11,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014649878] [2021-10-29 00:05:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:11,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:11,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502198066] [2021-10-29 00:05:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 00:05:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:11,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 00:05:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:12,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:12,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014649878] [2021-10-29 00:05:12,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:12,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502198066] [2021-10-29 00:05:12,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502198066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:12,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:12,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-29 00:05:12,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365461136] [2021-10-29 00:05:12,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:05:12,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:05:12,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:12,595 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:12,973 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-10-29 00:05:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 00:05:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:12,979 INFO L225 Difference]: With dead ends: 52 [2021-10-29 00:05:12,979 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 00:05:12,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 00:05:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-10-29 00:05:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-10-29 00:05:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-29 00:05:13,010 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2021-10-29 00:05:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:13,011 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-29 00:05:13,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-29 00:05:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 00:05:13,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:13,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:13,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-29 00:05:13,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-29 00:05:13,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:13,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675316222] [2021-10-29 00:05:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:13,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:13,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:13,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271672902] [2021-10-29 00:05:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:13,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 00:05:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:13,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 00:05:13,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:13,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:13,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675316222] [2021-10-29 00:05:13,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:13,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271672902] [2021-10-29 00:05:13,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271672902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:13,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:13,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-29 00:05:13,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809717470] [2021-10-29 00:05:13,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:05:13,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:05:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:13,778 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-29 00:05:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:14,146 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-29 00:05:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2021-10-29 00:05:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:14,153 INFO L225 Difference]: With dead ends: 69 [2021-10-29 00:05:14,153 INFO L226 Difference]: Without dead ends: 61 [2021-10-29 00:05:14,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-29 00:05:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2021-10-29 00:05:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 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) [2021-10-29 00:05:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-29 00:05:14,173 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2021-10-29 00:05:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:14,173 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-29 00:05:14,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-29 00:05:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-29 00:05:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 00:05:14,176 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:14,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:14,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:14,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-10-29 00:05:14,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:14,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300707335] [2021-10-29 00:05:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:14,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:14,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:14,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464405257] [2021-10-29 00:05:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:14,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:14,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 00:05:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:14,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:14,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:14,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:14,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300707335] [2021-10-29 00:05:14,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:14,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464405257] [2021-10-29 00:05:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464405257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:14,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:05:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812179452] [2021-10-29 00:05:14,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:05:14,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:05:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:14,672 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:14,800 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-10-29 00:05:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:14,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 00:05:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:14,808 INFO L225 Difference]: With dead ends: 95 [2021-10-29 00:05:14,808 INFO L226 Difference]: Without dead ends: 89 [2021-10-29 00:05:14,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-29 00:05:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-10-29 00:05:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 71 states have internal predecessors, (82), 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) [2021-10-29 00:05:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-10-29 00:05:14,825 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2021-10-29 00:05:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:14,826 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-10-29 00:05:14,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-10-29 00:05:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 00:05:14,828 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:14,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:14,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:15,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2015957290, now seen corresponding path program 1 times [2021-10-29 00:05:15,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114206736] [2021-10-29 00:05:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,079 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:15,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181434259] [2021-10-29 00:05:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 00:05:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:15,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:15,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:15,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114206736] [2021-10-29 00:05:15,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:15,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181434259] [2021-10-29 00:05:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181434259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:15,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:15,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 00:05:15,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410471911] [2021-10-29 00:05:15,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:05:15,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:05:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:15,540 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-29 00:05:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:15,729 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-10-29 00:05:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 [2021-10-29 00:05:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:15,735 INFO L225 Difference]: With dead ends: 72 [2021-10-29 00:05:15,735 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 00:05:15,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:05:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 00:05:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-29 00:05:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.203125) internal successors, (77), 69 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) [2021-10-29 00:05:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-10-29 00:05:15,768 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2021-10-29 00:05:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:15,769 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-10-29 00:05:15,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-29 00:05:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-10-29 00:05:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 00:05:15,771 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:15,771 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:15,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:15,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-10-29 00:05:15,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765859016] [2021-10-29 00:05:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:16,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304004842] [2021-10-29 00:05:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 00:05:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:16,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765859016] [2021-10-29 00:05:16,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:16,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304004842] [2021-10-29 00:05:16,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304004842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:16,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-29 00:05:16,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499703581] [2021-10-29 00:05:16,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:16,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:16,398 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-29 00:05:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:16,594 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-10-29 00:05:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:05:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-10-29 00:05:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:16,598 INFO L225 Difference]: With dead ends: 123 [2021-10-29 00:05:16,599 INFO L226 Difference]: Without dead ends: 117 [2021-10-29 00:05:16,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:16,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-29 00:05:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2021-10-29 00:05:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 87 states have internal predecessors, (98), 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) [2021-10-29 00:05:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-29 00:05:16,637 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2021-10-29 00:05:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:16,638 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-29 00:05:16,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-29 00:05:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-29 00:05:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 00:05:16,641 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:16,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:16,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-29 00:05:16,856 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-10-29 00:05:16,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:16,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763634899] [2021-10-29 00:05:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:16,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074391204] [2021-10-29 00:05:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 00:05:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:17,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763634899] [2021-10-29 00:05:17,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:17,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074391204] [2021-10-29 00:05:17,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074391204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:17,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:05:17,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951001757] [2021-10-29 00:05:17,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:05:17,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:17,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:05:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:17,395 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:17,628 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-10-29 00:05:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 00:05:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:17,631 INFO L225 Difference]: With dead ends: 140 [2021-10-29 00:05:17,631 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 00:05:17,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 00:05:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2021-10-29 00:05:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 100 states have internal predecessors, (112), 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) [2021-10-29 00:05:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-10-29 00:05:17,670 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2021-10-29 00:05:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:17,670 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-10-29 00:05:17,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-10-29 00:05:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 00:05:17,673 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:17,674 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:17,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:17,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:17,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1828677220, now seen corresponding path program 2 times [2021-10-29 00:05:17,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:17,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115823457] [2021-10-29 00:05:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:17,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:17,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:17,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204397193] [2021-10-29 00:05:17,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:17,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:17,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 00:05:18,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:18,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 00:05:18,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:18,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115823457] [2021-10-29 00:05:18,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:18,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204397193] [2021-10-29 00:05:18,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204397193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:18,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189013255] [2021-10-29 00:05:18,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:18,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:18,556 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:18,853 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2021-10-29 00:05:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-29 00:05:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:18,858 INFO L225 Difference]: With dead ends: 168 [2021-10-29 00:05:18,858 INFO L226 Difference]: Without dead ends: 162 [2021-10-29 00:05:18,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:05:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-29 00:05:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 119. [2021-10-29 00:05:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.176991150442478) internal successors, (133), 118 states have internal predecessors, (133), 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) [2021-10-29 00:05:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-10-29 00:05:18,880 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 34 [2021-10-29 00:05:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:18,881 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-10-29 00:05:18,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-10-29 00:05:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-29 00:05:18,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:18,884 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:18,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-29 00:05:19,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:19,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2021-10-29 00:05:19,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:19,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672921367] [2021-10-29 00:05:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:19,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:19,147 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:19,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779578171] [2021-10-29 00:05:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:19,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:19,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:19,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 00:05:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:19,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 00:05:19,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:19,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672921367] [2021-10-29 00:05:19,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:19,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779578171] [2021-10-29 00:05:19,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779578171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:19,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:19,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652768217] [2021-10-29 00:05:19,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:19,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:19,930 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-29 00:05:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:20,207 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-10-29 00:05:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2021-10-29 00:05:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:20,210 INFO L225 Difference]: With dead ends: 208 [2021-10-29 00:05:20,210 INFO L226 Difference]: Without dead ends: 200 [2021-10-29 00:05:20,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-29 00:05:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 128. [2021-10-29 00:05:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 127 states have internal predecessors, (143), 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) [2021-10-29 00:05:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2021-10-29 00:05:20,233 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2021-10-29 00:05:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:20,234 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2021-10-29 00:05:20,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-29 00:05:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2021-10-29 00:05:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 00:05:20,236 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:20,236 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:20,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:20,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-29 00:05:20,453 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1158953764, now seen corresponding path program 2 times [2021-10-29 00:05:20,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:20,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471971964] [2021-10-29 00:05:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:20,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:20,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:20,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958738507] [2021-10-29 00:05:20,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:20,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:20,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:20,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 00:05:20,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:20,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:20,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:20,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:20,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471971964] [2021-10-29 00:05:20,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:20,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958738507] [2021-10-29 00:05:20,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958738507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:20,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:20,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 00:05:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087395287] [2021-10-29 00:05:20,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:20,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:20,927 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-10-29 00:05:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:21,016 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2021-10-29 00:05:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-10-29 00:05:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:21,019 INFO L225 Difference]: With dead ends: 241 [2021-10-29 00:05:21,019 INFO L226 Difference]: Without dead ends: 142 [2021-10-29 00:05:21,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-29 00:05:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2021-10-29 00:05:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.1640625) internal successors, (149), 133 states have internal predecessors, (149), 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) [2021-10-29 00:05:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-10-29 00:05:21,053 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 39 [2021-10-29 00:05:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:21,056 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-10-29 00:05:21,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-10-29 00:05:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-10-29 00:05:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-29 00:05:21,066 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:21,067 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:21,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:21,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,287 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:21,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1020421613, now seen corresponding path program 3 times [2021-10-29 00:05:21,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:21,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770259691] [2021-10-29 00:05:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:21,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:21,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902097595] [2021-10-29 00:05:21,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:21,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:21,316 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:21,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 00:05:21,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-29 00:05:21,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:21,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 00:05:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 00:05:22,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770259691] [2021-10-29 00:05:22,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902097595] [2021-10-29 00:05:22,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902097595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:22,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:22,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:05:22,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145919522] [2021-10-29 00:05:22,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:05:22,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:05:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:22,099 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:40,673 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-10-29 00:05:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-29 00:05:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:40,676 INFO L225 Difference]: With dead ends: 142 [2021-10-29 00:05:40,676 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 00:05:40,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 00:05:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2021-10-29 00:05:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.119047619047619) internal successors, (94), 86 states have internal predecessors, (94), 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) [2021-10-29 00:05:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-10-29 00:05:40,697 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2021-10-29 00:05:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:40,698 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-10-29 00:05:40,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-10-29 00:05:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-29 00:05:40,700 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:40,700 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:40,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:40,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-29 00:05:40,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1074581755, now seen corresponding path program 2 times [2021-10-29 00:05:40,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:40,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544186689] [2021-10-29 00:05:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:40,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:40,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:40,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718220368] [2021-10-29 00:05:40,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:40,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:40,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:40,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 00:05:41,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:41,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:41,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-29 00:05:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:44,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:44,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544186689] [2021-10-29 00:05:44,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:44,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718220368] [2021-10-29 00:05:44,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718220368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:44,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:44,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-29 00:05:44,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091174117] [2021-10-29 00:05:44,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 00:05:44,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 00:05:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:44,719 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2021-10-29 00:05:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:49,825 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2021-10-29 00:05:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 00:05:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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 44 [2021-10-29 00:05:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:49,827 INFO L225 Difference]: With dead ends: 141 [2021-10-29 00:05:49,827 INFO L226 Difference]: Without dead ends: 133 [2021-10-29 00:05:49,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2021-10-29 00:05:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-29 00:05:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2021-10-29 00:05:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 93 states have (on average 1.118279569892473) internal successors, (104), 95 states have internal predecessors, (104), 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) [2021-10-29 00:05:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-10-29 00:05:49,853 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 44 [2021-10-29 00:05:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:49,854 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-10-29 00:05:49,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2021-10-29 00:05:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-10-29 00:05:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-29 00:05:49,855 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:49,856 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:49,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-29 00:05:50,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-29 00:05:50,072 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1128629901, now seen corresponding path program 3 times [2021-10-29 00:05:50,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:50,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623251096] [2021-10-29 00:05:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:50,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:50,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:50,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304088536] [2021-10-29 00:05:50,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:50,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:50,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:50,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 00:05:50,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:05:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-29 00:05:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-29 00:05:52,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:52,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623251096] [2021-10-29 00:05:52,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:52,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304088536] [2021-10-29 00:05:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304088536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:52,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:52,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-29 00:05:52,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532795859] [2021-10-29 00:05:52,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:05:52,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:05:52,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:05:52,448 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-29 00:05:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:53,250 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2021-10-29 00:05:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 00:05:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 48 [2021-10-29 00:05:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:53,252 INFO L225 Difference]: With dead ends: 110 [2021-10-29 00:05:53,252 INFO L226 Difference]: Without dead ends: 98 [2021-10-29 00:05:53,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-29 00:05:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-29 00:05:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-29 00:05:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 89 states have internal predecessors, (95), 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) [2021-10-29 00:05:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-10-29 00:05:53,291 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 48 [2021-10-29 00:05:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:53,292 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-10-29 00:05:53,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-10-29 00:05:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-10-29 00:05:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-29 00:05:53,294 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:53,294 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:53,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:53,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-29 00:05:53,513 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1934789142, now seen corresponding path program 4 times [2021-10-29 00:05:53,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:53,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104110733] [2021-10-29 00:05:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:53,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:53,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:53,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417942820] [2021-10-29 00:05:53,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:53,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:53,543 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:53,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 00:05:53,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:53,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-29 00:05:53,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:56,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:56,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104110733] [2021-10-29 00:05:56,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:56,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417942820] [2021-10-29 00:05:56,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417942820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:56,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:56,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-29 00:05:56,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686500784] [2021-10-29 00:05:56,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:05:56,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:05:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:05:56,961 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2021-10-29 00:05:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:58,935 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2021-10-29 00:05:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-29 00:05:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 53 [2021-10-29 00:05:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:58,938 INFO L225 Difference]: With dead ends: 145 [2021-10-29 00:05:58,938 INFO L226 Difference]: Without dead ends: 137 [2021-10-29 00:05:58,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-29 00:05:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-29 00:05:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-10-29 00:05:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.09375) internal successors, (105), 98 states have internal predecessors, (105), 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) [2021-10-29 00:05:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2021-10-29 00:05:58,969 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 53 [2021-10-29 00:05:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:58,970 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2021-10-29 00:05:58,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2021-10-29 00:05:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2021-10-29 00:05:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-29 00:05:58,971 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:58,972 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:59,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-29 00:05:59,187 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash -413997928, now seen corresponding path program 5 times [2021-10-29 00:05:59,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:59,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973814385] [2021-10-29 00:05:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:59,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:59,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:59,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914443760] [2021-10-29 00:05:59,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:05:59,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:59,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:59,210 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:59,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-29 00:05:59,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-29 00:05:59,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:59,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:59,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:00,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:00,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973814385] [2021-10-29 00:06:00,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:00,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914443760] [2021-10-29 00:06:00,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914443760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:00,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:00,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:06:00,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693329745] [2021-10-29 00:06:00,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:06:00,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:06:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:06:00,184 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-10-29 00:06:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:00,444 INFO L93 Difference]: Finished difference Result 198 states and 208 transitions. [2021-10-29 00:06:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:06:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) Word has length 57 [2021-10-29 00:06:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:00,447 INFO L225 Difference]: With dead ends: 198 [2021-10-29 00:06:00,447 INFO L226 Difference]: Without dead ends: 143 [2021-10-29 00:06:00,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:06:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-29 00:06:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2021-10-29 00:06:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 126 states have internal predecessors, (137), 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) [2021-10-29 00:06:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-29 00:06:00,497 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 57 [2021-10-29 00:06:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:00,498 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-29 00:06:00,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2021-10-29 00:06:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-29 00:06:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-29 00:06:00,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:00,499 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:00,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:00,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-29 00:06:00,715 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1860833829, now seen corresponding path program 6 times [2021-10-29 00:06:00,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:00,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344215283] [2021-10-29 00:06:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:00,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:00,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:00,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758105417] [2021-10-29 00:06:00,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-29 00:06:00,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:00,765 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:00,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 00:06:01,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-29 00:06:01,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:01,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 00:06:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-29 00:06:01,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:01,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344215283] [2021-10-29 00:06:01,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:01,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758105417] [2021-10-29 00:06:01,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758105417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:01,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:01,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:06:01,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808212723] [2021-10-29 00:06:01,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:06:01,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:01,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:06:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:06:01,954 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-29 00:06:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:02,294 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2021-10-29 00:06:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 00:06:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 62 [2021-10-29 00:06:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:02,297 INFO L225 Difference]: With dead ends: 146 [2021-10-29 00:06:02,297 INFO L226 Difference]: Without dead ends: 131 [2021-10-29 00:06:02,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-29 00:06:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-29 00:06:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 81. [2021-10-29 00:06:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 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) [2021-10-29 00:06:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2021-10-29 00:06:02,329 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2021-10-29 00:06:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:02,329 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2021-10-29 00:06:02,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-29 00:06:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2021-10-29 00:06:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-29 00:06:02,331 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:02,331 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:02,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:02,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:02,549 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:02,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash 300678153, now seen corresponding path program 7 times [2021-10-29 00:06:02,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:02,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391637575] [2021-10-29 00:06:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:02,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:02,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:02,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525008698] [2021-10-29 00:06:02,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:06:02,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:02,605 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:02,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-29 00:06:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:06:03,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-29 00:06:03,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:04,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:04,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391637575] [2021-10-29 00:06:04,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:04,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525008698] [2021-10-29 00:06:04,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525008698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:04,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:04,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-29 00:06:04,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529137014] [2021-10-29 00:06:04,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:06:04,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:06:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:06:04,620 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2021-10-29 00:06:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:05,240 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-10-29 00:06:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-29 00:06:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 66 [2021-10-29 00:06:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:05,242 INFO L225 Difference]: With dead ends: 135 [2021-10-29 00:06:05,243 INFO L226 Difference]: Without dead ends: 128 [2021-10-29 00:06:05,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-29 00:06:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-29 00:06:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2021-10-29 00:06:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 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) [2021-10-29 00:06:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2021-10-29 00:06:05,289 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 66 [2021-10-29 00:06:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:05,290 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2021-10-29 00:06:05,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2021-10-29 00:06:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2021-10-29 00:06:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-29 00:06:05,291 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:05,292 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:05,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:05,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-29 00:06:05,519 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash 397597340, now seen corresponding path program 8 times [2021-10-29 00:06:05,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:05,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720461176] [2021-10-29 00:06:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:05,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:05,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:05,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825499073] [2021-10-29 00:06:05,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:06:05,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:05,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:05,553 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:05,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-29 00:06:06,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:06:06,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:06,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:06:06,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 55 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:06,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:06,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720461176] [2021-10-29 00:06:06,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:06,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825499073] [2021-10-29 00:06:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825499073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:06,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:06,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-29 00:06:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808839611] [2021-10-29 00:06:06,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:06:06,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:06:06,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:06:06,724 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-10-29 00:06:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:07,340 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2021-10-29 00:06:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:06:07,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2021-10-29 00:06:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:07,343 INFO L225 Difference]: With dead ends: 196 [2021-10-29 00:06:07,343 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 00:06:07,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:06:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 00:06:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2021-10-29 00:06:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.05) internal successors, (126), 120 states have internal predecessors, (126), 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) [2021-10-29 00:06:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-10-29 00:06:07,385 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 75 [2021-10-29 00:06:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:07,385 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-10-29 00:06:07,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-10-29 00:06:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-10-29 00:06:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-29 00:06:07,387 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:07,387 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:07,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:07,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-29 00:06:07,596 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash 822588344, now seen corresponding path program 9 times [2021-10-29 00:06:07,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:07,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840954986] [2021-10-29 00:06:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:07,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:07,629 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:07,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993551373] [2021-10-29 00:06:07,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:06:07,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:07,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:07,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-29 00:06:08,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:06:08,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:08,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 00:06:08,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-29 00:06:08,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:08,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840954986] [2021-10-29 00:06:08,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:08,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993551373] [2021-10-29 00:06:08,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993551373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:08,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:08,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:06:08,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141766009] [2021-10-29 00:06:08,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:06:08,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:06:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:06:08,752 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-10-29 00:06:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:09,068 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-10-29 00:06:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:06:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 75 [2021-10-29 00:06:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:09,070 INFO L225 Difference]: With dead ends: 121 [2021-10-29 00:06:09,070 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 00:06:09,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:06:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 00:06:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 00:06:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 00:06:09,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2021-10-29 00:06:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:09,074 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 00:06:09,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-10-29 00:06:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 00:06:09,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 00:06:09,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,087 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,088 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,088 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,088 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,089 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:09,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:09,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:09,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 00:06:09,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:09,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:09,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:10,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:10,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:10,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:11,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:11,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:11,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:11,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:06:21,987 WARN L207 SmtUtils]: Spent 7.01 s on a formula simplification. DAG size of input: 183 DAG size of output: 38 [2021-10-29 00:06:32,255 WARN L207 SmtUtils]: Spent 10.26 s on a formula simplification. DAG size of input: 188 DAG size of output: 39 [2021-10-29 00:06:45,618 WARN L207 SmtUtils]: Spent 9.02 s on a formula simplification. DAG size of input: 202 DAG size of output: 74 [2021-10-29 00:06:51,760 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 151 DAG size of output: 66 [2021-10-29 00:06:54,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,351 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-29 00:06:54,351 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-29 00:06:54,351 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-29 00:06:54,351 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,351 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 00:06:54,352 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 00:06:54,352 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-29 00:06:54,352 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-29 00:06:54,352 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-29 00:06:54,353 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,354 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse8 (= ULTIMATE.start_main_~a~0 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (<= ULTIMATE.start_main_~y~0 100)) (.cse10 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse0 (or (and .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* 4 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 4) .cse6 .cse7) (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~b~0 .cse10) (= ULTIMATE.start_main_~a~0 2)))) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse11 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))))) (.cse2 (<= 0 ULTIMATE.start_main_~x~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 (<= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse1 .cse2 .cse3) (and (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~q~0 1) .cse9) (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse10)))) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse4 .cse5 .cse6 .cse7 .cse1 .cse11 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse4 .cse6 .cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse1 .cse11 .cse2 .cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))))) [2021-10-29 00:06:54,354 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-10-29 00:06:54,355 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,355 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse6 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse8 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (let ((.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (or (and .cse0 .cse10 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0)))) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse10 (= ULTIMATE.start_main_~q~0 1))) .cse4 .cse6 .cse8 .cse9) (let ((.cse11 (div ULTIMATE.start_main_~q~0 2))) (and .cse0 (= (mod (div (- .cse11) (- 2)) (- 2)) 0) (= ULTIMATE.start_main_~y~0 (* (div (* (div (* .cse11 (- 1)) (- 2)) (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) .cse10 .cse4 (= (mod ULTIMATE.start_main_~q~0 2) 0) .cse6 (= (mod .cse11 (- 2)) 0) .cse8 .cse9 (= (+ ULTIMATE.start_main_~r~0 (* 8 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~x~0)))))) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse7 .cse8 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-29 00:06:54,355 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-10-29 00:06:54,355 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,356 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,356 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse6 (<= 0 ULTIMATE.start_main_~x~0)) (.cse7 (<= ULTIMATE.start_main_~x~0 100)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) .cse1 .cse2 .cse3 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse6 .cse7 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (or (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse2 .cse3) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 1) .cse8)) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-29 00:06:54,356 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,357 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse11 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (.cse16 (* ULTIMATE.start_main_~b~0 (- 1))) (.cse14 (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1)))) (.cse15 (+ ULTIMATE.start_main_~y~0 1))) (let ((.cse9 (< (div .cse14 (- 2)) .cse15)) (.cse10 (<= (div .cse16 (- 2)) ULTIMATE.start_main_~y~0)) (.cse12 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse11))) (.cse8 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 100)) (.cse7 (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse2 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse3 .cse4)))) (or (and (or (let ((.cse1 (div ULTIMATE.start_main_~q~0 2)) (.cse6 (* 8 ULTIMATE.start_main_~y~0))) (and .cse0 (= (mod (div (- .cse1) (- 2)) (- 2)) 0) (= ULTIMATE.start_main_~y~0 (* (div (* (div (* .cse1 (- 1)) (- 2)) (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) .cse2 .cse3 .cse4 (= (mod ULTIMATE.start_main_~q~0 2) 0) (= (mod .cse1 (- 2)) 0) .cse5 (<= .cse6 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 .cse6) ULTIMATE.start_main_~x~0))) (and .cse7 .cse8 .cse5)) .cse9 .cse10) (and .cse0 (= (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0 .cse11) (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) .cse12 .cse3 .cse4 .cse13 .cse8 .cse5) (and .cse0 .cse9 .cse12 .cse3 .cse4 .cse13 .cse10 .cse8 .cse5) (and .cse0 (= (+ ULTIMATE.start_main_~r~0 (* 4 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~x~0) (< (div (div .cse14 2) (- 2)) .cse15) .cse12 .cse3 .cse4 .cse13 (<= (div (div .cse16 2) (- 2)) ULTIMATE.start_main_~y~0) .cse8 .cse5) (and .cse7 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-29 00:06:54,358 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,358 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-29 00:06:54,358 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,359 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-29 00:06:54,359 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,359 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 100)) (.cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~r~0) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-29 00:06:54,360 INFO L860 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-10-29 00:06:54,360 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,360 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 00:06:54,360 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~r~0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 100)) [2021-10-29 00:06:54,360 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-29 00:06:54,361 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-29 00:06:54,361 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,361 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,361 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,361 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,362 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,362 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,362 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,362 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-29 00:06:54,362 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 00:06:54,363 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-29 00:06:54,371 INFO L731 BasicCegarLoop]: Path program histogram: [9, 3, 2, 1, 1, 1, 1, 1] [2021-10-29 00:06:54,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:06:54,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:06:54 BoogieIcfgContainer [2021-10-29 00:06:54,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:06:54,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:06:54,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:06:54,452 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:06:54,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:11" (3/4) ... [2021-10-29 00:06:54,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 00:06:54,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-29 00:06:54,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 00:06:54,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:06:54,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:06:54,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:06:54,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:06:54,561 INFO L168 Benchmark]: Toolchain (without parser) took 104508.34 ms. Allocated memory was 81.8 MB in the beginning and 182.5 MB in the end (delta: 100.7 MB). Free memory was 46.0 MB in the beginning and 65.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 80.8 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,561 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:06:54,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.98 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 59.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.09 ms. Allocated memory is still 81.8 MB. Free memory was 59.0 MB in the beginning and 57.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,563 INFO L168 Benchmark]: Boogie Preprocessor took 35.88 ms. Allocated memory is still 81.8 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,564 INFO L168 Benchmark]: RCFGBuilder took 593.39 ms. Allocated memory is still 81.8 MB. Free memory was 56.1 MB in the beginning and 44.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,564 INFO L168 Benchmark]: TraceAbstraction took 103340.54 ms. Allocated memory was 81.8 MB in the beginning and 182.5 MB in the end (delta: 100.7 MB). Free memory was 44.6 MB in the beginning and 69.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,565 INFO L168 Benchmark]: Witness Printer took 107.53 ms. Allocated memory is still 182.5 MB. Free memory was 69.2 MB in the beginning and 65.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:54,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.98 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 59.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.09 ms. Allocated memory is still 81.8 MB. Free memory was 59.0 MB in the beginning and 57.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.88 ms. Allocated memory is still 81.8 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 593.39 ms. Allocated memory is still 81.8 MB. Free memory was 56.1 MB in the beginning and 44.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 103340.54 ms. Allocated memory was 81.8 MB in the beginning and 182.5 MB in the end (delta: 100.7 MB). Free memory was 44.6 MB in the beginning and 69.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.1 GB. * Witness Printer took 107.53 ms. Allocated memory is still 182.5 MB. Free memory was 69.2 MB in the beginning and 65.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 103.1s, OverallIterations: 19, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 45.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 563 SDtfs, 1153 SDslu, 1305 SDs, 0 SdLazy, 2780 SolverSat, 394 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 815 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=10, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 446 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 104 NumberOfFragments, 1266 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1506695 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 535351 FormulaSimplificationTreeSizeReductionInter, 42.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 753 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 6798 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2320 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 390/694 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || ((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && a == 1) && b == y)) && x == r + q * y) && 0 <= x) && x <= 100 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 <= cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((cond == 1 && -(q / 2) / -2 % -2 == 0) && y == q / 2 * -1 / -2 * -1 / -2 * y) && 1 <= cond) && 1 <= y) && y <= 100) && q % 2 == 0) && q / 2 % -2 == 0) && x <= 100) && 8 * y <= x) && r + 8 * y == x) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100)) && 0 <= x) && x <= 100)) && (-1 + r * -1) / -2 < y + 1) && b * -1 / -2 <= y) || (((((((cond == 1 && b + r + q * y == x + a * y) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && 0 <= x) && x <= 100)) || ((((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b * -1 / -2 <= y) && 0 <= x) && x <= 100)) || (((((((((cond == 1 && r + 4 * y == x) && (-1 + r * -1) / 2 / -2 < y + 1) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b * -1 / 2 / -2 <= y) && 0 <= x) && x <= 100)) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100)) && r < y) && b <= y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (r < 2 * b && (((((((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) || (((x == r + y && cond == 1) && 1 <= cond) && q == 1)) && a == 1) && y <= r) && x <= 100) && b == y) || ((((((((((cond == 1 && -(q / 2) / -2 % -2 == 0) && y == q / 2 * -1 / -2 * -1 / -2 * y) && 1 <= cond) && a == 1) && q % 2 == 0) && y <= r) && q / 2 % -2 == 0) && x <= 100) && b == y) && r + 8 * y == x)))) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && y <= 100) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && b == y)) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && b == 2 * y) && a == 2)) && y <= b + r) && 1 == cond) && r < b) && x == r + q * y) && 0 <= x) && x <= 100) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((((((cond == 1 && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && y <= 100) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && b == y)) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && b == 2 * y) && a == 2)) && q == 2) && x == r + 2 * y)) && r < y) && b <= y)) || ((((((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0)) || ((((((((cond == 1 && 1 <= y) && y <= 100) && a == q) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && r == x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && y <= b + r) && 1 == cond) && 1 <= y) && y <= 100) && r < b) && a == 1) && x == r + q * y) && 0 <= x) && x <= 100) && b == y) || ((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0)) || ((r < y && (((((cond == 1 && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100) || (((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y))) && b <= y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 00:06:54,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d8dd14-4ab5-4ae1-b08b-35df34677cdf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...