./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/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 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:44:34,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:44:34,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:44:34,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:44:34,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:44:34,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:44:34,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:44:34,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:44:34,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:44:34,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:44:34,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:44:34,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:44:34,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:44:34,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:44:34,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:44:34,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:44:34,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:44:34,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:44:34,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:44:34,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:44:34,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:44:34,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:44:34,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:44:34,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:44:34,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:44:34,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:44:34,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:44:34,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:44:34,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:44:34,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:44:34,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:44:34,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:44:34,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:44:34,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:44:34,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:44:34,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:44:34,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:44:34,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:44:34,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:44:34,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:44:34,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:44:34,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:44:34,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:44:34,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:44:34,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:44:34,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:44:34,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:44:34,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:44:34,694 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:44:34,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:44:34,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:44:34,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:44:34,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:44:34,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:44:34,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:44:34,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:44:34,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:44:34,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:44:34,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:44:34,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:44:34,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:44:34,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:44:34,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:44:34,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:44:34,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:34,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:44:34,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:44:34,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:44:34,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:44:34,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:44:34,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:44:34,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:44:34,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:44:34,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:44:34,702 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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e [2021-10-28 23:44:34,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:44:34,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:44:34,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:44:34,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:44:34,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:44:34,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-28 23:44:35,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/data/15a053093/b742e107f6014feba94f3deb77010d03/FLAGe2511eb39 [2021-10-28 23:44:35,509 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:44:35,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-28 23:44:35,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/data/15a053093/b742e107f6014feba94f3deb77010d03/FLAGe2511eb39 [2021-10-28 23:44:35,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/data/15a053093/b742e107f6014feba94f3deb77010d03 [2021-10-28 23:44:35,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:44:35,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:44:35,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:35,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:44:35,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:44:35,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:35" (1/1) ... [2021-10-28 23:44:35,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4570b97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:35, skipping insertion in model container [2021-10-28 23:44:35,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:35" (1/1) ... [2021-10-28 23:44:35,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:44:35,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:44:36,094 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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-28 23:44:36,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:36,122 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:44:36,131 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_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-28 23:44:36,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:36,151 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:44:36,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36 WrapperNode [2021-10-28 23:44:36,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:36,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:36,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:44:36,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:44:36,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:36,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:44:36,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:44:36,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:44:36,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:44:36,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:44:36,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:44:36,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:44:36,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (1/1) ... [2021-10-28 23:44:36,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:36,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:44:36,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:44:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:44:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:44:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:44:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:44:36,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:44:36,627 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-28 23:44:36,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:36 BoogieIcfgContainer [2021-10-28 23:44:36,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:44:36,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:44:36,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:44:36,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:44:36,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:44:35" (1/3) ... [2021-10-28 23:44:36,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdbb541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:36, skipping insertion in model container [2021-10-28 23:44:36,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:36" (2/3) ... [2021-10-28 23:44:36,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdbb541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:36, skipping insertion in model container [2021-10-28 23:44:36,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:36" (3/3) ... [2021-10-28 23:44:36,637 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2021-10-28 23:44:36,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:44:36,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 23:44:36,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:44:36,723 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 [2021-10-28 23:44:36,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 23:44:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 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) [2021-10-28 23:44:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:44:36,765 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:36,766 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:36,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-10-28 23:44:36,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:36,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320087320] [2021-10-28 23:44:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:36,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:37,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:37,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320087320] [2021-10-28 23:44:37,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320087320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:37,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:44:37,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005287276] [2021-10-28 23:44:37,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:44:37,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:44:37,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:44:37,040 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:37,066 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-10-28 23:44:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:44:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:44:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:37,092 INFO L225 Difference]: With dead ends: 79 [2021-10-28 23:44:37,092 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 23:44:37,096 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 [2021-10-28 23:44:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 23:44:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-28 23:44:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 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) [2021-10-28 23:44:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-28 23:44:37,142 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-10-28 23:44:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:37,142 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-28 23:44:37,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-28 23:44:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:44:37,144 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:37,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:37,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:44:37,145 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)] === [2021-10-28 23:44:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-28 23:44:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:37,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15701898] [2021-10-28 23:44:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:37,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:37,181 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:37,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555822760] [2021-10-28 23:44:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:37,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:37,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:37,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:37,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:44:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:37,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:44:37,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:37,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:37,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15701898] [2021-10-28 23:44:37,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:37,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555822760] [2021-10-28 23:44:37,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555822760] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:37,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:37,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:44:37,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333057945] [2021-10-28 23:44:37,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:37,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:37,528 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:37,718 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-28 23:44:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:44:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:44:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:37,723 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:44:37,723 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 23:44:37,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:44:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 23:44:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-10-28 23:44:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 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) [2021-10-28 23:44:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-10-28 23:44:37,738 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-10-28 23:44:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:37,739 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-10-28 23:44:37,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-10-28 23:44:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:44:37,741 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:37,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:37,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:37,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:37,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:37,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-10-28 23:44:37,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:37,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020133719] [2021-10-28 23:44:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:37,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:37,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:37,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107190821] [2021-10-28 23:44:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:38,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:38,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:38,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:44:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:38,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:44:38,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:38,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:38,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020133719] [2021-10-28 23:44:38,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:38,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107190821] [2021-10-28 23:44:38,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107190821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:38,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:38,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:44:38,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615911938] [2021-10-28 23:44:38,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:44:38,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:44:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:44:38,120 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:38,147 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-28 23:44:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:44:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:44:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:38,149 INFO L225 Difference]: With dead ends: 44 [2021-10-28 23:44:38,149 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:44:38,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:44:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:44:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-28 23:44:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 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) [2021-10-28 23:44:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-28 23:44:38,165 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-10-28 23:44:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:38,166 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-28 23:44:38,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-28 23:44:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:44:38,168 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:38,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:38,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:38,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:38,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-10-28 23:44:38,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:38,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838843331] [2021-10-28 23:44:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:38,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:38,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:38,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27602370] [2021-10-28 23:44:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:38,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:38,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:38,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:44:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:38,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:44:38,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:38,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:38,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838843331] [2021-10-28 23:44:38,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:38,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27602370] [2021-10-28 23:44:38,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27602370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:38,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:38,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:44:38,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164424105] [2021-10-28 23:44:38,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:38,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:38,639 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:38,823 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-10-28 23:44:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:44:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:38,825 INFO L225 Difference]: With dead ends: 74 [2021-10-28 23:44:38,825 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 23:44:38,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:44:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 23:44:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-10-28 23:44:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.326086956521739) internal successors, (61), 52 states have internal predecessors, (61), 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) [2021-10-28 23:44:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-28 23:44:38,832 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-10-28 23:44:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:38,833 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-28 23:44:38,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-10-28 23:44:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:44:38,833 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:38,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:38,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 23:44:39,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:39,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-10-28 23:44:39,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:39,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657004494] [2021-10-28 23:44:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:39,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:39,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:39,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013807819] [2021-10-28 23:44:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:39,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:39,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:39,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:39,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:44:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:44:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:39,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:39,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657004494] [2021-10-28 23:44:39,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:39,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013807819] [2021-10-28 23:44:39,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013807819] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:39,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:39,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:44:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632929421] [2021-10-28 23:44:39,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:44:39,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:44:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:44:39,237 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:39,322 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-28 23:44:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:44:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 23:44:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:39,329 INFO L225 Difference]: With dead ends: 104 [2021-10-28 23:44:39,329 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 23:44:39,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:39,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 23:44:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2021-10-28 23:44:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.338235294117647) internal successors, (91), 74 states have internal predecessors, (91), 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) [2021-10-28 23:44:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-28 23:44:39,352 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2021-10-28 23:44:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-28 23:44:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-28 23:44:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:44:39,354 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:39,354 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:39,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-28 23:44:39,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:39,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-10-28 23:44:39,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:39,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781916511] [2021-10-28 23:44:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:39,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:39,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:39,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050598603] [2021-10-28 23:44:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:39,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:39,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:39,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:44:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:39,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:44:39,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:39,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:39,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781916511] [2021-10-28 23:44:39,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:39,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050598603] [2021-10-28 23:44:39,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050598603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:39,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:39,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:44:39,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024923503] [2021-10-28 23:44:39,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:44:39,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:44:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:39,736 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-28 23:44:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:39,760 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-10-28 23:44:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:44:39,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-10-28 23:44:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:39,761 INFO L225 Difference]: With dead ends: 121 [2021-10-28 23:44:39,762 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 23:44:39,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 23:44:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-28 23:44:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 74 states have internal predecessors, (90), 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) [2021-10-28 23:44:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-10-28 23:44:39,770 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2021-10-28 23:44:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:39,770 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-10-28 23:44:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-28 23:44:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-10-28 23:44:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:44:39,771 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:39,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:39,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:39,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:40,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-10-28 23:44:40,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:40,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411400673] [2021-10-28 23:44:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:40,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:40,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:40,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423770375] [2021-10-28 23:44:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:40,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:40,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:40,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:44:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:40,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:44:40,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:40,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:40,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411400673] [2021-10-28 23:44:40,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:40,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423770375] [2021-10-28 23:44:40,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423770375] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:40,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:40,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:44:40,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986097071] [2021-10-28 23:44:40,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:40,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:40,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:40,216 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 23:44:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:40,375 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-10-28 23:44:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-10-28 23:44:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:40,376 INFO L225 Difference]: With dead ends: 82 [2021-10-28 23:44:40,376 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 23:44:40,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:44:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 23:44:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-10-28 23:44:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 72 states have internal predecessors, (85), 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) [2021-10-28 23:44:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-10-28 23:44:40,384 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2021-10-28 23:44:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:40,384 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-10-28 23:44:40,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 23:44:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-10-28 23:44:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:44:40,386 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:40,386 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] [2021-10-28 23:44:40,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:40,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:40,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-10-28 23:44:40,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:40,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647205235] [2021-10-28 23:44:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:40,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:40,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:40,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642939313] [2021-10-28 23:44:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:40,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:40,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:40,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:44:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:40,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:44:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:41,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:41,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647205235] [2021-10-28 23:44:41,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:41,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642939313] [2021-10-28 23:44:41,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642939313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:41,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:41,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:44:41,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040939803] [2021-10-28 23:44:41,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:41,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:41,081 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:41,241 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2021-10-28 23:44:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:44:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 23:44:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:41,246 INFO L225 Difference]: With dead ends: 129 [2021-10-28 23:44:41,246 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 23:44:41,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:44:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 23:44:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 88. [2021-10-28 23:44:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 87 states have internal predecessors, (102), 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) [2021-10-28 23:44:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-10-28 23:44:41,265 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 24 [2021-10-28 23:44:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:41,266 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-10-28 23:44:41,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-10-28 23:44:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:44:41,268 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:41,268 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:41,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 23:44:41,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:44:41,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-10-28 23:44:41,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:41,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761991236] [2021-10-28 23:44:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:41,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:41,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:41,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522224822] [2021-10-28 23:44:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:41,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:41,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:41,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:44:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:41,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:44:41,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:41,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:41,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761991236] [2021-10-28 23:44:41,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:41,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522224822] [2021-10-28 23:44:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522224822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:41,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:44:41,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102851742] [2021-10-28 23:44:41,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:41,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:41,702 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:41,726 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-10-28 23:44:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:44:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 23:44:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:41,728 INFO L225 Difference]: With dead ends: 113 [2021-10-28 23:44:41,728 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 23:44:41,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 23:44:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-10-28 23:44:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 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) [2021-10-28 23:44:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-10-28 23:44:41,742 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 24 [2021-10-28 23:44:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:41,742 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-10-28 23:44:41,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-10-28 23:44:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:44:41,745 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:41,745 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, 1] [2021-10-28 23:44:41,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:41,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:41,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2122999750, now seen corresponding path program 1 times [2021-10-28 23:44:41,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:41,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227448120] [2021-10-28 23:44:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:41,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:41,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:41,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788950856] [2021-10-28 23:44:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:41,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:41,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:41,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:44:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:42,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:44:42,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:44:42,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:42,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227448120] [2021-10-28 23:44:42,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:42,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788950856] [2021-10-28 23:44:42,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788950856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:42,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:42,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:44:42,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570675172] [2021-10-28 23:44:42,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:44:42,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:44:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:42,165 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:42,190 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-10-28 23:44:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:44:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 23:44:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:42,192 INFO L225 Difference]: With dead ends: 59 [2021-10-28 23:44:42,193 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:44:42,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:44:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-10-28 23:44:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-10-28 23:44:42,201 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 27 [2021-10-28 23:44:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:42,202 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-10-28 23:44:42,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-10-28 23:44:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:44:42,207 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:42,208 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:42,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:42,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:44:42,424 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-10-28 23:44:42,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:42,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113197035] [2021-10-28 23:44:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:42,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:42,435 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:42,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760658633] [2021-10-28 23:44:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:42,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:42,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:42,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:42,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:44:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:42,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 23:44:42,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:43,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:43,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113197035] [2021-10-28 23:44:43,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:43,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760658633] [2021-10-28 23:44:43,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760658633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:43,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:43,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 23:44:43,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602518329] [2021-10-28 23:44:43,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:44:43,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:44:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:44:43,131 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:43,397 INFO L93 Difference]: Finished difference Result 45 states and 44 transitions. [2021-10-28 23:44:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:44:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 23:44:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:43,398 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:44:43,398 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 23:44:43,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:44:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 23:44:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-28 23:44:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0) internal successors, (33), 33 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-10-28 23:44:43,403 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 28 [2021-10-28 23:44:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:43,403 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-10-28 23:44:43,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-10-28 23:44:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:44:43,404 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:43,404 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:43,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:43,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 23:44:43,605 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 23:44:43,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1005744700, now seen corresponding path program 1 times [2021-10-28 23:44:43,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:43,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817647170] [2021-10-28 23:44:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:43,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:43,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:43,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406400253] [2021-10-28 23:44:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:43,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:43,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:43,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:44:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:43,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:44:43,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:43,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:43,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817647170] [2021-10-28 23:44:43,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:43,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406400253] [2021-10-28 23:44:43,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406400253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:43,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:43,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:44:43,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286771383] [2021-10-28 23:44:43,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:43,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:43,891 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:43,909 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-10-28 23:44:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:44:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 23:44:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:43,910 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:44:43,910 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:44:43,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:44:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:44:43,911 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) [2021-10-28 23:44:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:44:43,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-10-28 23:44:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:43,912 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:44:43,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:44:43,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:44:43,915 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,915 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,915 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:43,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:44,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:44,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:44:44,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:44:44,490 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,490 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-28 23:44:44,490 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0 (= ULTIMATE.start_main_~b~0 0) (<= 0 ~counter~0) (<= ~counter~0 0) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse1 (<= 3 ~counter~0)) (and (<= 2 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-28 23:44:44,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) 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_~q~0 0)) (.cse4 (<= 1 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and (<= 2 ~counter~0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 2) .cse3 .cse4 .cse5) (and .cse0 .cse1 (<= ~counter~0 1) (<= 1 ~counter~0) .cse2 .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L860 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,492 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ~counter~0 1) (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) [2021-10-28 23:44:44,492 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,493 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ~counter~0 1) (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) [2021-10-28 23:44:44,493 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,493 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-28 23:44:44,493 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,493 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-28 23:44:44,493 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,493 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-28 23:44:44,493 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,494 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,495 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,495 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,495 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-28 23:44:44,495 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:44:44,495 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 23:44:44,500 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:44,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:44:44,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:44:44 BoogieIcfgContainer [2021-10-28 23:44:44,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:44:44,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:44:44,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:44:44,528 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:44:44,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:36" (3/4) ... [2021-10-28 23:44:44,545 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:44:44,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:44:44,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:44:44,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:44:44,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:44:44,597 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:44:44,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:44:44,599 INFO L168 Benchmark]: Toolchain (without parser) took 8703.17 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 80.5 MB in the beginning and 136.9 MB in the end (delta: -56.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,600 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 111.1 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:44:44,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.93 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 84.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:44:44,601 INFO L168 Benchmark]: Boogie Preprocessor took 34.53 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 81.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,601 INFO L168 Benchmark]: RCFGBuilder took 377.80 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 70.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,602 INFO L168 Benchmark]: TraceAbstraction took 7896.78 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 70.2 MB in the beginning and 141.1 MB in the end (delta: -70.9 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,602 INFO L168 Benchmark]: Witness Printer took 70.19 ms. Allocated memory is still 176.2 MB. Free memory was 141.1 MB in the beginning and 136.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:44,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 111.1 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.93 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 84.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.53 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 81.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.80 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 70.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7896.78 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 70.2 MB in the beginning and 141.1 MB in the end (delta: -70.9 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. * Witness Printer took 70.19 ms. Allocated memory is still 176.2 MB. Free memory was 141.1 MB in the beginning and 136.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 565 SDslu, 579 SDs, 0 SdLazy, 456 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 91 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 23 NumberOfFragments, 292 HoareAnnotationTreeSize, 10 FomulaSimplifications, 863 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 995 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1097 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 21/29 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: (((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && q == 0) && a == 1) && 1 <= r) && r == x) && b == y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && b == a * y) && q == 0) && a == 1) && 1 <= r) && r == x - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((2 <= counter && cond == 1) && 1 <= cond) && 1 <= y) && q == 0) && a == 1) && 1 <= r) && r == x) && b == y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && q == 0) && a == 1) && 1 <= r) && r == x) && b == y - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((2 <= counter && cond == 1) && 1 <= cond) && 1 <= y) && b == 2 * y) && a == 2) && q == 0) && 1 <= r) && r == x) || (((((((((cond == 1 && 1 <= cond) && counter <= 1) && 1 <= counter) && 1 <= y) && q == 0) && a == 1) && 1 <= r) && r == x) && b == y) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((cond == 1 && 1 <= cond) && counter <= 1) && 1 <= counter) && 1 <= y) && q == 0) && r == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((a == 0 && cond == 1) && b == 0) && 0 <= counter) && counter <= 0) && 1 <= y) && q == 0) && r == x) || (((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 1 <= y) && 3 <= counter)) || ((((((2 <= counter && x == r + y) && cond == 1) && 1 <= y) && a == 1) && q == 1) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && counter <= 1) && 1 <= counter) && 1 <= y) && q == 0) && r == x RESULT: Ultimate proved your program to be correct! [2021-10-28 23:44:44,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b2bc72-f483-4d53-a04a-d28ffda1fc0e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...